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Colorado State University

Colorado State University is one of our nation's leading research universities with world-class research in infectious disease, atmospheric science, clean energy technologies, and environmental science. It was founded in 1870 as the Colorado Agricultural College, six years before the Colorado Territory became a state.

Colorado State University, located in Fort Collins, Colorado, is situated on nearly 5,000 acres of land, including the main campus, a foothills campus, an agricultural campus, and a mountain campus (Pingree Park). Colorado State also has 4,600 acres for research centers, Cooperative Extension offices, and Colorado State Forest Service stations.


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Image Subject Name Scientific Name Description
5490385 western harvester ant Pogonomyrmex occidentalis Mating balls of western harvester ant
5490308 cicada killer Sphecius speciosus Left: female Right:male  
5490396 western harvester ant Pogonomyrmex occidentalis activity near nest entrance
5490416 rough harvester ant Pogonomyrmex rugosus Activity near nest entrance
5490417 rough harvester ant Pogonomyrmex rugosus Winged female reproductives at nest entrance
5490418 rough harvester ant Pogonomyrmex rugosus New queen excavating potential new nest
5490419 rough harvester ant Pogonomyrmex rugosus New queen excavating potential new nest
5490406 rough harvester ant Pogonomyrmex rugosus Activity near nest entrance
5490415 rough harvester ant Pogonomyrmex rugosus Activity near nest entrance
5490358 sawfly Schizocerella pilicornis adult male flying to plant
5490357 sawfly Schizocerella pilicornis
5490359 sawfly Schizocerella pilicornis pair prior to mating
5490360 sawfly Schizocerella pilicornis mating
5490361 sawfly Schizocerella pilicornis Mating pair with 2nd male attempting to mate
5490377 European alder leafminer Fenusa dohrnii leaf mine
5490380 hawthorn leafminer Profenusa canadensis leaf mine
5490381 hawthorn leafminer Profenusa canadensis leaf mine
5490382 hawthorn leafminer Profenusa canadensis leaf mine
5488807 Argentine ant Linepithema humile Adults collecting honeydew from scale insects
5488808 Argentine ant Linepithema humile feeding on fipronil gel bait
5488809 Argentine ant Linepithema humile Homemade bait station:sugar, water and boric acid was used as the bait, applied to the cotton balls.
5488810 Argentine ant Linepithema humile Home-made bait station. Sugar, water and boric acid was used as the bait, applied to cotton balls
5489216 alfalfa leafcutting bee Megachile rotundata Adult on surface of bee block used for nesting
5489217 alfalfa leafcutting bee Megachile rotundata Adults on surface of bee block used for nesting
5489219 alfalfa leafcutting bee Megachile rotundata Nesting blocks set in seed alfalfa field for use by alfalfa leafcutting bee
5489221 alfalfa leafcutting bee Megachile rotundata Nest blocks set in seed alfalfa field for use by alfalfa leafcutting bee
5489222 alfalfa leafcutting bee Megachile rotundata Nest blocks set in alfalfa field for use by alfalfa leafcutting bee
5489212 German yellowjacket Vespula germanica Collecting pollen in late season
5489213 German yellowjacket Vespula germanica Collecting pollen in late season
5489214 German yellowjacket Vespula germanica Collecting pollen late season
5489203 large garden bumble bee Bombus ruderatus Four species of bumble bees were introdced into New Zealand, primarily to assist in pollinating clovers.
5489204 large garden bumble bee Bombus ruderatus Four species of bumble bees were introduced into New Zealand, primarily to assist in pollinating clovers.
5489205 large garden bumble bee Bombus ruderatus Four species of bumble bees were introduced into New Zealand, primarily to assist in pollinating clovers.
5489206 large garden bumble bee Bombus ruderatus Four species of bumble bees were introduced into New Zealand, primarily to assist in pollinating clovers.
5489207 large garden bumble bee Bombus ruderatus Four species of bumble bees were introduced into New Zealand, primarily to assist in pollinating clovers.
5489208 large garden bumble bee Bombus ruderatus Four species of bumble bees were introduced into New Zealand, primarily to assist in pollinating clovers.
5489200 large earth humble bee Bombus terrestris Four species of bumble bees were introduced into New Zealand, primarily to assist in polinating clovers. However, their ability to pollinate other introduced plants has greatly aided in the success and establishment of many invasive weeds.
5489201 large earth humble bee Bombus terrestris Four species of bumble bees were introduced into New Zealand, primarily to assist in pollinating clovers. However, their ability to polinate other plants has greatly aided in the success and establishment of many invasive weeds.
5489202 large earth humble bee Bombus terrestris Four species of bumble bees were introduced into New Zealand, primarily to assist in pollinating clovers. However, their ability to pollinate other introduced plants has greatly aided in the success and establishment of many invasive weeds.
5489209 wasp Vespula vulgaris Late season queen visiting flowers for pollen.
5489210 wasp Vespula vulgaris Late season queen visiting flowers for pollen.
5489197 Chinese paper wasp Polistes chinensis
5489198 Chinese paper wasp Polistes chinensis
5489199 Chinese paper wasp Polistes chinensis
5443148 European alder leafminer Fenusa dohrnii Blotch mines produced by leafminer
5432718 bumble bee Bombus morrisoni on a Eremurus spp.
5432716 bumble bee Bombus morrisoni on a Eremurus
5445242 dogwood sawfly Macremphytus tarsatus Frass
5083023 oak rough bulletgall wasp Disholcaspis quercusmamma a few of the galls in the center show emergence holes. Galls are at the time of adult emergence (November 3, 2006).
5393529 bumble bees Bombus spp. Male resting in sunflower during early morning.
5445237 dogwood sawfly Macremphytus tarsatus Late stage larvae massed on underside of leaf
5445280 leafcutter bee Megachile spp. Prepupa within cocoon
5445277 leafcutter bee Megachile spp. leaf fragments from nest cell removed from cocoon
5445254 honey bee Apis mellifera Building a "bee beard." Cynthia Manuel and David Rimmer are helping to arrange the honey bees covering the face of Matt Camper.
5445253 honey bee Apis mellifera Building a "bee beard." Cynthia Manuel and David Rimmer are helping to arrange the honey bees covering the face of Matt Camper.
5445252 honey bee Apis mellifera Building a "bee beard." Cynthia Manuel and David Rimmer are helping to arrange the honey bees covering the face of Matt Camper.
5445250 imported currantworm Nematus ribesii Feeding on leaf margin
5445251 imported currantworm Nematus ribesii Last instar larvae
5445248 imported currantworm Nematus ribesii Early stage larva feeding in leaf interior
5445249 imported currantworm Nematus ribesii Early stage larva feeding on leaf margin
5445246 imported currantworm Nematus ribesii Mating swarm in plant interior
5445247 imported currantworm Nematus ribesii Eggs laid along leaf vain
5445245 imported currantworm Nematus ribesii
5445243 imported currantworm Nematus ribesii
5445241 dogwood sawfly Macremphytus tarsatus Defoliation. Note old larval skins attached to leaves
5445239 dogwood sawfly Macremphytus tarsatus Defoliation due to dogwood sawfly
5445240 dogwood sawfly Macremphytus tarsatus Defoliation due to dogwood sawfly
5445238 dogwood sawfly Macremphytus tarsatus Late stage larvae massed on underside of leaf
5445165 Argentine ant Linepithema humile Feeding on sugar water/boric acid bait
5445164 Argentine ant Linepithema humile Feeding on fipronil gel bait
5445319 paper wasp Polistes dominula Small lek of males, present in mid-September
5445318 western yellowjacket Vespula pensylvanica trap baited with heptyl butyrate (left). The gray bag, sold as the Waspinator, purportedly repels wasps, but trap captures were not affected by its placement next to traps.
5445317 prairie yellowjacket Vespula atropilosa Adult visiting traps baited with heptyl butyrate
5445316 western yellowjacket Vespula pensylvanica Trap baited with heptyl butyrate
5445315 western yellowjacket Vespula pensylvanica Adult visiting pancakes with syrup
5445314 western yellowjacket Vespula pensylvanica
5445279 leafcutter bee Megachile spp. Cocoon with leaf fragments of nest cell removed
5445276 leafcutter bee Megachile spp. Intact nest cell extracted from wood
5445223 pigeon tremex Tremex columba
5445169 paper wasp Polistes dominula Adults visiting hummingbird feeder
5445224 pigeon tremex Tremex columba
5445225 pigeon tremex Tremex columba
1476047 mountain-ash sawfly Pristiphora geniculata Larvae
1476046 mountain-ash sawfly Pristiphora geniculata Larvae
5443214 European alder leafminer Fenusa dohrnii Blotch mines produced by leafminer
5443194 oak rough bulletgall wasp Disholcaspis quercusmamma Adult female on twiggall. Photograph taken November 5, 2011
5443195 oak rough bulletgall wasp Disholcaspis quercusmamma Adult female on twiggall. Photograph taken on November 5, 2010
5443162 baldfaced hornet Dolichovespula maculata Nest at end of year. Photograph taken October 27, 2010
5443163 baldfaced hornet Dolichovespula maculata Nest at end of year. Photograph taken October 27, 2010
1326063 raspberry horntail Hartigia cressonii Larval tunneling in raspberry
5432733 bumble bee Bombus melanopygus
5432734 bumble bee Bombus melanopygus
5432717 bumble bee Bombus morrisoni
5432735 golden northern bumble bee Bombus fervidus
5432736 golden northern bumble bee Bombus fervidus
5432728 bumble bee Bombus huntii
5432729 bumble bee Bombus huntii
5432730 bumble bee Bombus huntii
5432739 bumble bee Bombus huntii
5432740 bumble bee Bombus huntii
5432742 bumble bee Bombus bifarius
5432741 bumble bee Bombus morrisoni
5432737 bumble bee Bombus huntii
5432723 bumble bees Bombus spp.
5432725 bumble bee Bombus bifarius
5432731 bumble bee Bombus nevadensis
5432732 bumble bee Bombus nevadensis
5432727 golden northern bumble bee Bombus fervidus
5432726 bumble bee Bombus appositus
5432719 bumble bee Bombus morrisoni
5432720 bumble bee Bombus morrisoni
5432721 bumble bee Bombus morrisoni
5432745 alkali bee Nomia melanderi
5432746 alkali bee Nomia melanderi
5432747 alkali bee Nomia melanderi
5432748 carpenter bee Xylocopa tabaniformis
5432749 carpenter bee Xylocopa tabaniformis
1243094 honey bee Apis mellifera Comb produced behind wall.
1326052 hunting wasp Pemphredon spp. Recently emerged asult nesting in green ash twig
1326010 oak rough bulletgall wasp Disholcaspis quercusmamma Fully formed galls on twig
1326008 oak rough bulletgall wasp Disholcaspis quercusmamma Winged adult form
1476099 alfalfa leafcutting bee Megachile rotundata Alfalfa leafcutting bee nesting block closeup
1476098 alfalfa leafcutting bee Megachile rotundata trailer moved to alfalfa seed field with alfalfa leafcutting bee nesting blocks
1326009 oak rough bulletgall wasp Disholcaspis quercusmamma Developing galls on twig
1246047 birch leafminer Fenusa pusilla
1246054 conifer sawfly Zadiprion townsendi
1326066 elm leafminer Kaliofenusa ulmi Typical leafmine
1326119 rose stem sawfly Hartigia trimaculata Pinned adult collected near Montrose, CO
1326047 leafcutter bee Megachile spp. Visiting flower pith
1326007 oak rough bulletgall wasp Disholcaspis quercusmamma Adult exposed from gall immediately prior to emergence
1455022 elm leafminer Kaliofenusa ulmi
1243157 carpenter ants Camponotus spp.
1455053 poplar leaffolding sawfly Phyllocolpa bozemani Older larva
1325095 Sphecid wasp Ammophila spp. carrying cherry sphinx prey
1246049 birch leafminer Fenusa pusilla
1455050 poplar leaffolding sawfly Phyllocolpa bozemani Young larva in leaf fold
1455015 European alder leafminer Fenusa dohrnii
1326006 oak rough bulletgall wasp Disholcaspis quercusmamma Developing galls on twig
1455080 pigeon tremex Tremex columba Female ovipositing
1326043 paper wasp Polistes dominula Early season nest with larvae visible distribution
1243120 paper wasp Polistes dominula Large nest
1455185 pigeon tremex Tremex columba Female ovipositing
1243095 honey bee Apis mellifera Comb produced on tree limb.
1326039 raspberry horntail Hartigia cressonii Larva exposed in tunnel of raspberry
1246048 birch leafminer Fenusa pusilla Exposed from leaf mine
1326004 Cynipid gall wasp Acraspis macrocarpae agamic generation
1246041 elm leafminer Kaliofenusa ulmi Larval tunneling
1455187 pigeon tremex Tremex columba Typical spherical exit holes
1325091 Sphecid wasp Ammophila spp. carrying cherry spinx (Sphinx drupiferarum) prey
1326042 paper wasp Polistes dominula An introduced species of rapidly expanding distribution
1455186 pigeon tremex Tremex columba Female ovipositing
1246050 birch leafminer Fenusa pusilla Characteristic mining damage
1246042 elm leafminer Kaliofenusa ulmi Exposed from mine
1455052 poplar leaffolding sawfly Phyllocolpa bozemani Older larva
1326038 raspberry horntail Hartigia cressonii Larva exposed in tunnel of raspberry
1326093 European alder leafminer Fenusa dohrnii Typical leafmines in Alder
1455019 elm leafminer Kaliofenusa ulmi Oviposition punctures in leaf
1455190 pigeon tremex Tremex columba Female ovipositing
1455020 elm leafminer Kaliofenusa ulmi Exposed from leaf mine
1243092 honey bee Apis mellifera Frame of capped honey.
1455189 pigeon tremex Tremex columba Female ovipositing
1243087 Western paper wasp Mischocyttarus flavitarsis Adult tending small nest
1455016 birch leafminer Fenusa pusilla
1455017 elm leafminer Kaliofenusa ulmi
1455018 elm leafminer Kaliofenusa ulmi Oviposition punctures in elm leaf
1326041 paper wasp Polistes dominula Nest observed in early July
1326050 leafcutter bee Megachile spp. Adult carrying leaf fragment
1246046 birch leafminer Fenusa pusilla
1326089 hawthorn leafminer Profenusa canadensis Blotch leafmine typically produced
5369885 blue horntail woodwasp Sirex cyaneus Adult female
1326005 oak rough bulletgall wasp Disholcaspis quercusmamma Fully formed galls on twig
1476093 European alder leafminer Fenusa dohrnii leaf mines
1476094 birch leafminer Fenusa pusilla leaf mines
1476095 birch leafminer Fenusa pusilla leaf mines
1476096 pear sawfly Caliroa cerasi early instar larvae near hatched egg
1476097 pear sawfly Caliroa cerasi
1476109 oak rough bulletgall wasp Disholcaspis quercusmamma gall cut away to show pupal chamber
1476110 oak rough bulletgall wasp Disholcaspis quercusmamma pupal covering
1476111 oak rough bulletgall wasp Disholcaspis quercusmamma pupa removed from pupal chamber
5369822 western yellowjacket Vespula pensylvanica Nest entrance in brick wall
5369903 bumble bees Bombus spp. Series of bees showing range of size.  The largest is an overwintered queen.
5369820 western yellowjacket Vespula pensylvanica Nest entrance in brick wall
5369810 golden paper wasp Polistes aurifer Late season (October 13) adult.  At the time mating activities were noted and adults were moving to winter shelter. 
5369867 eastern yellowjacket Vespula maculifrons Late season adult (October 30, 2008).
5369883 blue horntail woodwasp Sirex cyaneus Adult female
5369821 golden paper wasp Polistes aurifer Late season (October 13) adult.  At the time mating activities were noted and adults were moving to winter shelter.  
5369886 blue horntail woodwasp Sirex cyaneus Adult female cleaning antennae
5369868 eastern yellowjacket Vespula maculifrons Late season adult (October 30, 2008).
5369788 golden paper wasp Polistes aurifer Late season (October 13) adult.  At the time mating activities were noted and adults were moving to winter shelter. 
5369799 golden paper wasp Polistes aurifer Shot of face showing markings of male. Late season (October 13) adult. At the time mating activities were noted and adults were moving to winter shelter.
5422252 Scoliid wasp Campsomeris pilipes adult searching for scarab prey
5422253 Scoliid wasp Campsomeris pilipes adult searching for scarab prey
2200046 rose stem sawfly Hartigia trimaculata Adult present during late May oviposition period
2200057 rose stem sawfly Hartigia trimaculata Adult present during late May oviposition period.
5211022 rose stem sawfly Hartigia trimaculata
5211023 rose stem sawfly Hartigia trimaculata
2200037 rose stem sawfly Hartigia trimaculata Adult present during late May oviposition period
5393609 black and yellow mud dauber Sceliphron caementaria Overwintered larvae exposed from cocoon
5393607 black and yellow mud dauber Sceliphron caementaria Cocoon of overwintered larvae exposed in cell
5393608 black and yellow mud dauber Sceliphron caementaria
5393606 black and yellow mud dauber Sceliphron caementaria Araneus spp. spider prey from mud dauber nest cell.  The wasp larva is in the upper right.
5393605 black and yellow mud dauber Sceliphron caementaria Araneus spp. spider prey from mud dauber nest cell
5393603 black and yellow mud dauber Sceliphron caementaria
5393604 black and yellow mud dauber Sceliphron caementaria
5393594 elm leafminer Kaliofenusa ulmi Leafmining injury produced by larvae
5393595 elm leafminer Kaliofenusa ulmi Leafmining injury produced by larvae
5393469 honey bee Apis mellifera Bumble bee Bombus huntii and honey bee visiting the same flower
5393468 bumble bee Bombus huntii Bumble bee and honey bee Apis mellifera visiting the same flower
5393460 Sphecid wasp Pseneo punctatus This wasp nests in soil and frequently burrows along the edge of potted plants. When plants are wintered indoors these wasps emerge within buildings in spring.
5393449 Sphecid wasp Pseneo punctatus This wasp nests in soil and frequently burrows along the edge of potted plants. When plants are wintered indoors these wasps emerge within buildings in spring.
5382107 pine catkin sawflies Xyela spp. Larvae were found dropping out of trees in large numbers following consumption of staminate flowers.  
5382108 pine catkin sawflies Xyela spp. Larvae were found dropping out of trees in large numbers following consumption of staminate flowers.  
1326049 leafcutter bee Megachile spp. Adult cutting leaf fragment of lilac in St. Paul, Minnesota
1326044 Long-horned bees Melissodes spp. Native bee that pollinates cucurbits
5303053 Long-horned bees Melissodes spp. Adult foraging at pumpkin flower. It is sharing the flower with two spotted cucumber beetles
5303050 Long-horned bees Melissodes spp. Adult foraging at pumpkin flower. Two spotted cucumber beetles are further into the flower.
5303051 Long-horned bees Melissodes spp. Adult foraging at pumpkin flower. A spotted cucumber beetles is along the side of the flower.
5303052 Long-horned bees Melissodes spp. Two adults foraging at pumpkin flower. They are sharing the flower with two spotted cucumber beetles.
5369789 tarantula hawk Pepsis angustimarginata Adult female
5369790 tarantula hawk Pepsis mildei Adult male
5369884 blue horntail woodwasp Sirex cyaneus Adult female
5364291 tarantula hawks Pepsis spp. Tarantula hawk (Pepsis sp.), a pompilid wasp predator of tarantulas.
5364280 Sphecid wasp Ammophila spp. A hunting wasp (Ammophila sp.) carrying its prey, a sphinx moth caterpillar.
5364292 velvet ants Dasymutilla spp. An adult velvet ant (Dasymutilla sp.) on a flower.
5365921 bumble bees Bombus spp. A bumble bee (Bombus spp.) on a sunflower (Helianthus spp.) head.
5364237 Braconid wasp Diaeretiella rapae Larva of the braconid wasp, Diaeretiella rapae, exposed in its aphid host.
5363706 honey bee Apis mellifera Some honeybee keeping facilities.
5363705 honey bee Apis mellifera A facility for keeping honeybees.
5364293 Sphecid wasp Astata occidentalis Adult sphecid wasp (Astata occidentalis) with its stink bug prey.
5364290 spider wasp Episyron quinquenotatus hurdi Adult spider wasp (Episyron quinquenotatus) with its prey.
5364289 spider wasp Agenioideus humilis Adult spider wasp (Agnioideus humilis) with its prey.
5364288 Sphecid wasp Bembix pruinosa Adult sphecid wasp (Podalonia valida) with its prey, a saltmarsh caterpillar (Estigmene acrea).
5364287 Sphecid wasps Podalonia spp. Adult Podalonia sp. wasp at the entrance to its nest.
5364286 Sphecid wasp Podalonia valida Larva of the sphecid wasp (Podalonia valida) consuming its prey, a saltmarsh caterpillar (Estigmene acrea).
5364285 Sphecid wasp Podalonia valida Larva of the sphecid wasp (Podalonia valida) on its prey, a saltmarsh caterpillar (Estigmene acrea).
5364284 Sphecid wasp Podalonia valida Eggs of the sphecid wasp (Podalonia valida) on its prey, a saltmarsh caterpillar (Estigmene acrea).
5364283 Sphecid wasps Podalonia spp. Sphecid wasp (Podalonia sp.) with its prey, a cutworm.  
5364282 Sphecid wasps Prionyx spp. Adult sphecid wasp (Prionyx sp.) with its grasshopper prey.
5364281 Sphecid wasps Prionyx spp. Eggs of a sphecid wasp (Prionyx sp.) on its grasshopper host.
5364279 Sphecid wasp Ammophila spp. Sphecid wasp (Ammophila sp.) stinging its prey, a notodontid moth caterpillar.
5364106 aphid parasite Aphelinus spp. Wasp parasitoid (Aphelinus sp.) of the Russian wheat aphid (Diuraphis noxia), with its host.
5364107 aphid parasite Aphelinus spp. Wasp parasitoid (Aphelinus sp.) of the Russian wheat aphid (Diuraphis noxia), with its host.
5364190 aphid parasite Aphelinus spp. Mummies of the Russian wheat aphid (Diuraphis noxia) after parasitization by the wasp Aphelinus.
5364189 Braconid wasp Diaeretiella rapae Close-up view of a mummy of the Russian wheat aphid (Diuraphis noxia), parasitized by the braconid wasp, Diaeretiella rapae.
5364178 wheat stem sawfly Cephus cinctus Wheat stem sawfly (Cephus cinctus).
5364100 aphid parasite Aphelinus spp.  Aphelinus nr. varipes, a wasp parasite of the Russian wheat aphid (Diuraphis noxia).
1481043 Braconid wasp Diaeretiella rapae imported for Russian wheat aphid
1481046 Braconid wasp Diaeretiella rapae parasitized Russian wheat aphid
1481050 Braconid wasp Diaeretiella rapae parasitized Russian wheat aphid colony
1481026 aphid parasite Aphelinus spp. imported for Russian wheat aphid
1481049 aphid parasite Aphelinus spp. parasitized Russian wheat aphid
5305003 digger bees Diadasia spp. Adult foraging at sunflower. Otero County, Colorado
5304062 cuckoo bees Epeolus spp.
5304063 cuckoo bees Epeolus spp.
5305005 digger bees Diadasia spp. Adult foraging at sunflower. Otero County, Colorado
5305039 western yellowjacket Vespula pensylvanica Adult chewing on leftover chicken
5305040 western yellowjacket Vespula pensylvanica Adults massed on leftover chicken
5304096 rough harvester ant Pogonomyrmex rugosus Workers at entrance
5304097 rough harvester ant Pogonomyrmex rugosus Workers at entrance
5304098 western harvester ant Pogonomyrmex occidentalis Workers at entrance
5304030 Sphecid wasp Cerceris spp. Mass aggregation feeding at flowers
5305011 leafcutter bee Megachile spp. Adult in process of collecting pollen
5305012 leafcutter bee Megachile spp. Adult in process of collecting pollen
5304085 black and yellow mud dauber Sceliphron caementaria Adult collecting mud for nest construction
5304086 black and yellow mud dauber Sceliphron caementaria Adult collecting mud for nest construction
5304074 aerial yellowjacket Dolichovespula arenaria Overwintered queen chewing on weathered wood
5303008 aerial yellowjacket Dolichovespula arenaria Worker visiting flower. Mendocino County, CA
5303079 honey bee Apis mellifera Small bee yard protected by electric fence to deter bear predation
5304031 honey bee Apis mellifera Adult collecting honeydew from oak lecanium scale
5303062 paper wasp Polistes dominula Adult collecting honeydew from oak
5304013 paper wasp Polistes apachus
5303009 forest yellowjacket Vespula acadica Worker visiting flower. Mendocino County, CA
5302057 Scoliid wasp Scolia nobilitata tricincta
5302058 Scoliid wasp Scolia nobilitata tricincta Adults massed on flower
5302080 honey bee Apis mellifera Adult workers foraging
5302082 leafcutter bee Megachile spp. Adult foraging for nectar in sweet pea flower
5302081 honey bee Apis mellifera Adult worker foraging
5024075 paper wasp Polistes dominula feeding on larvae of California pear sawfly
1246002 Eulophid wasp Tetrastichus triozae Parasitized potato/tomato psyllid nymph after emergance of parasitoid
5025020 Western paper wasp Mischocyttarus flavitarsis Female cleaning nest cell.
1476020 acacia-ants Pseudomyrmex ferrugineus A Centeral American plant with mutualistic realationship with an ant species(Pseudomyrmex ferriginea)
1476015 western thatching ant Formica obscuripes Nest
1476016 western thatching ant Formica obscuripes Nest
1476017 western thatching ant Formica obscuripes Feeding on beetle prey
1476005 leafcutter bee Megachile spp. Larval cells in trap nest
1476006 leafcutter bee Megachile spp. Larval cells in trap nest
1476053 Giant ichneumon wasp Megarhyssa spp. Adult ovipositing
1476054 Giant ichneumon wasp Megarhyssa spp. Adult ovipositing
1476055 Giant ichneumon wasp Megarhyssa spp. Adult ovipositing
1476056 Giant ichneumon wasp Megarhyssa spp. Adult ovipositing
1476009 digger bee Anthophora sp. Nest site at Pawnee National Grasslands, Colorado
1476010 digger bee Anthophora sp. Ground nesting near Roggen, Colorado
1476057 Tiphiid wasp Tiphia spp. Adult
1476058 Scoliid wasp Campsomeris plumipes Cluster sleeping on plant stem
1476019 bulldog ant Myrmecia spp. Adult
1476041 weaver ant Oecophylla spp. Nest constructed of leaves
1476042 weaver ant Oecophylla spp. Nest after disturbance
1476011 yellow ant Acanthomyops spp. Adults, larvae and eggs exposed in nest
1476012 yellow ant Acanthomyops spp. Adults and larvae
1476013 yellow ant Acanthomyops spp. Adults ana larvae
1476014 yellow ant Acanthomyops spp. Adults and larvae
1476043 spitfire grubs Perga spp. Mass of last stage larvae
1476044 spitfire grubs Perga spp. Larva
1476045 spitfire grubs Perga spp. Mass of larvae
5209071 southern fire ant Solenopsis xyloni Workers swarming forage looper prey
5210058 western thatching ant Formica obscuripes Workers at nest entrance
5210078 hunting wasp Pemphredon spp. Male attempting to pull female from nest
5210079 hunting wasp Pemphredon spp. Male visiting burrow of female made in garden stake
5209070 Hunting wasp Ammophila zanthoptera Adult with forage looper prey
5210086 Andrenid bees Andrena spp. Female digging burrow
5210087 Andrenid bees Andrena spp. Burrow entrance
5210088 Andrenid bees Andrena spp. Female in flight
5210089 Andrenid bees Andrena spp.
5210090 Andrenid bees Andrena spp. Male attempting to mate with female
5210091 Andrenid bees Andrena spp.
5210092 Andrenid bees Andrena spp. Female guarding nest entrance
5210093 Andrenid bees Andrena spp. Female guarding nest entrance
5210094 Andrenid bees Andrena spp.
5210095 Andrenid bees Andrena spp. Male emerging after checking recent nest
5211014 elm leafminer Kaliofenusa ulmi Adults on leaves of host plant.
5209036 imported currantworm Nematus ribesii Late stage larvae
5209037 imported currantworm Nematus ribesii Newly hatched larvae and associated shothole feeding injury initially produced
5209038 imported currantworm Nematus ribesii Early stage larvae
5209039 imported currantworm Nematus ribesii
5209040 imported currantworm Nematus ribesii
5209041 imported currantworm Nematus ribesii
5209042 imported currantworm Nematus ribesii
5187093 spider wasp Psorthaspis sanguinea Visiting flower. August 11, 2006. Bent County, Colorado
5187094 spider wasp Psorthaspis sanguinea Visiting flower. August 11, 2006. Bent County, Colorado
5187095 spider wasp Psorthaspis sanguinea Visiting flower. August 11, 2006. Bent County, Colorado
5188013 prairie yellowjacket Vespula atropilosa Overwintered queen
5188010 western yellowjacket Vespula pensylvanica Overwintered queen
5188011 western yellowjacket Vespula pensylvanica Overwintered queen
5188012 horse guard wasp Stictia signata Male hovering during territorial defense. Photograph taken at Punta Allen, Quintana
1491059 horse guard wasp Stictia carolina Adult, close-up
1491057 Sphecid wasp Philanthus zebratus Digging nest
1491060 horse guard wasp Stictia carolina Adult carrying horse fly prey into nest
1491058 Sphecid wasp Clypeadon laticinctus With Pogonomyrmex occidentalis prey
1491005 black and yellow mud dauber Sceliphron caementaria Building mud nest
1491018 spider wasp Episyron quinquenotatus hurdi adult with spider prey
1491019 bumble bee Bombus nevadensis Perched male guarding territory
1491029 Eumenid wasp Eumenid nest and adult
1491030 Eumenid wasp Eumenid at trap nest
1491031 Vespid wasp Symmorphus canadensis Chrysomelid larvae contents of trap nest
1491010 Sphecid wasp Podalonia valida Adult with cutworm prey
1491032 aerial yellowjacket Dolichovespula arenaria Large nest of with adults at entrance
1491033 aerial yellowjacket Dolichovespula arenaria Small nest of Dolichovespula arenaria with queen and queen of the parasite D. arctica
1491036 paper wasp Polistes fuscatus Nest in beer can
1491037 paper wasp Polistes fuscatus Nest with workers
1491034 baldfaced hornet Dolichovespula maculata Large nest in shrubbery
1491035 baldfaced hornet Dolichovespula maculata Young nest
1491017 spider wasp Agenioideus humilis adult with spider prey
1491026 cicada killer Sphecius speciosus close-up
1491024 Sphecid wasp Bembix pruinosa with Eristalis prey at nest entrance
1491027 Sphecid wasp Astata occidentalis with stinkbug prey
1491028 Sphecid wasp Crabro monticola with Thereva sp. fly prey
1491001 yellow ant Acanthomyops spp. Adult workers and pupae
1491012 Sphecid wasp Podalonia valida Adult at nest entrance
1491011 Sphecid wasp Podalonia valida Egg on salt-marsh caterpillar prey
1491013 Sphecid wasp Podalonia valida Young larva on salt-marsh caterpillar host
1491014 Sphecid wasp Podalonia valida Full grown larva with nearly fully consumed salt-marsh caterpillar host
1491015 Sphecid wasp Podalonia valida Larva after almost entirely consuming salt-marsh caterpillar host
1491016 Sphecid wasp Podalonia valida Adult with salt-marsh caterpillar prey
1491021 Sphecid wasp Bembix palmata with prey
1491022 Sphecid wasp Bembix palmata Egg on horse fly host
1491023 Sphecid wasp Bembix pruinosa Digging
1491039 Giant ichneumon wasp Megarhyssa spp. Ovipositing in wood
1491025 cicada killer Sphecius speciosus with Tibicen sp. prey
1491006 Sphecid wasp Ammophila spp. Stinging notodontid caterpillar prey
1491002 Sphecid wasps Eucerceris spp. Adult with Cleonus weevil prey
1491003 Sphecid wasp Bembecinus quinquespinosus Mating ball
1491004 Sphecid wasps Bembecinus spp. Adult with leafhopper, Cuerna striata, prey
1491009 Sphecid wasps Prionyx spp. Prionyx digging nest
1491007 Sphecid wasps Prionyx spp. Egg on grasshopper host
1491008 Sphecid wasps Prionyx spp. Prionyx adult with grasshopper prey
1491020 western thatching ant Formica obscuripes Large mound
1491038 mountain-ash sawfly Pristiphora geniculata Larvae feeding on leaf
1475034 Braconid wasp Perilitus coccinellae adult recently emerged from lady beetle host
1475043 pavement ant Tetramorium caespitum alate female
5084048 oak rough bulletgall wasp Disholcaspis quercusmamma galls
5083091 golden paper wasp Polistes fuscatus aurifer overwintering queen produced in late summer
5084031 prairie yellowjacket Vespula atropilosa overwintering queen exposed from under a board in late October
5083046 Vespid wasp Euodynerus crypticus visiting pond edge
5082081 oak rough bulletgall wasp Disholcaspis quercusmamma galls very densely clustered on a small twig
5083018 oak rough bulletgall wasp Disholcaspis quercusmamma shortly after emergence. Picture taken November 3, 2006
5083019 oak rough bulletgall wasp Disholcaspis quercusmamma side view. Picture taken during period of emergence (November 3, 2006)
5083020 oak rough bulletgall wasp Disholcaspis quercusmamma side view. Picture taken during adult emergence (November 3, 2006)
5083021 oak rough bulletgall wasp Disholcaspis quercusmamma Adult palpitating bud during examination prior to oviposition (November 3, 2006)
5083022 oak rough bulletgall wasp Disholcaspis quercusmamma Galls at time when adults are emerging. The gall in foreground with irregular wound was made by a bird feeding on the gall.
5083007 rough harvester ant Pogonomyrmex rugosus workers at nest entrance
5083009 rough harvester ant Pogonomyrmex rugosus workers at nest entrance
5083010 rough harvester ant Pogonomyrmex rugosus workers at nest entrance
5083011 rough harvester ant Pogonomyrmex rugosus nest
5083003 western harvester ant Pogonomyrmex occidentalis Mating balls following swarm flight. Mating observed July 8, 2006 near an isolated cottonwood stand in Crowley County, Colorado
5083004 western harvester ant Pogonomyrmex occidentalis mating balls following swarm flight. Mating observed July 8, 2006 near an isolated cottonwood stand in Crowley County, Colorado
5083005 western harvester ant Pogonomyrmex occidentalis workers at nest entrance
5083006 western harvester ant Pogonomyrmex occidentalis workers at nest entrance
5025005 aerial yellowjacket Dolichovespula arenaria Foraging at flowers in late summer.
5025006 aerial yellowjacket Dolichovespula arenaria Early season queen sunning on leaf.
5024092 baldfaced hornet Dolichovespula maculata Nest produced on low-growing shrub.
5024093 baldfaced hornet Dolichovespula maculata Workers defending nest after hive disturbance.
5024094 baldfaced hornet Dolichovespula maculata Workers defending nest after hive disturbance.
5024095 baldfaced hornet Dolichovespula maculata in flight
5024096 baldfaced hornet Dolichovespula maculata Collecting honeydew from galls of oak rough bulletgall wasp.
5024098 baldfaced hornet Dolichovespula maculata Collecting honeydew from galls of oak rough bulletgall wasp.
5025004 western yellowjacket Vespula pensylvanica with bumble flower beetle (Euphoria inda) foraging on bacterial ooze on willow
5024063 paper wasp Polistes dominula Collecting honeydew secreted by peony bud
5025018 Western paper wasp Mischocyttarus flavitarsis Male
5024086 paper wasp Polistes dominula Late season adult, a potential overwintering queen, basking on an oak leaf.
5024097 paper wasp Polistes dominula Feeding on honeydew secreted by gall produced by oak rough bulletgall wasp.
5025008 paper wasp Polistes dominula Colony located in pipe supporting clothes lines.
5025017 paper wasp Polistes dominula sunning on rocks at nest entrance
5025019 paper wasp Polistes dominula basking in early morning from a colony located in metal pipe of clothes line
5025030 paper wasp Polistes dominula Colony established on sweet corn tassel. August 20, 2006
5024099 western yellowjacket Vespula pensylvanica sunning on leaf
5024100 western yellowjacket Vespula pensylvanica foraging on chicken liver
5025001 western yellowjacket Vespula pensylvanica chewing on chicken liver with calliphoris (Lucilia sp.)
5025002 western yellowjacket Vespula pensylvanica Colony entrance at back of stone wall.
5025003 western yellowjacket Vespula pensylvanica manipulating cut piece of chicken liver
5025016 paper wasp Polistes metrica
5025024 Western paper wasp Mischocyttarus flavitarsis foraging
5025029 golden paper wasp Polistes fuscatus aurifer foraging at rabbitbrush
5025035 carpenter wasp Monobia quadridens sunning on leaf
5025037 carpenter wasp Monobia quadridens preparing for flight
5025033 Vespid wasp Euodynerus crypticus collecting water at pool
5025027 paper wasp Polistes apachus foraging
5025028 golden paper wasp Polistes fuscatus aurifer Adult foraging on ooze from tree
5025021 Western paper wasp Mischocyttarus flavitarsis Female
5025022 Western paper wasp Mischocyttarus flavitarsis emerging from nest cell
5025023 Western paper wasp Mischocyttarus flavitarsis nest
5025025 Western paper wasp Mischocyttarus flavitarsis in flight
5025026 Western paper wasp Mischocyttarus flavitarsis collecting water at pool
5025031 paper wasp Polistes fuscatus female
5025032 paper wasp Polistes fuscatus Male
5025034 paper wasp Polistes fuscatus male
5025013 prairie yellowjacket Vespula atropilosa visiting bacterial ooze on a willow branch with golden paper wasp (Polistes fuscatus aurifer), bumble flower beetle (Euphoria inda) and Tragidion coquus
5025007 prairie yellowjacket Vespula atropilosa foraging at rabbitbrush
5025009 prairie yellowjacket Vespula atropilosa foraging
5025012 paper wasp Polistes carolina adult collecting water from pool.
5025014 paper wasp Polistes carolina at colony entrance
5025015 paper wasp Polistes carolina in flight
5025010 prairie yellowjacket Vespula atropilosa Heptyl butyrate-baited trap containing a mixture of prairie yellowjackets (ca. 85%) and western yellowjackets.
5025011 prairie yellowjacket Vespula atropilosa capturing calliphorid fly attracted to chicken liver bait
5024006 western yellowjacket Vespula pensylvanica Queen produced in late Fall
5023081 paper wasp Polistes dominula colony established on sweet corn tassel. August 26, 2006
5023082 paper wasp Polistes dominula adult present during late May oviposition period
5023091 paper wasp Polistes dominula larvae and capped pupae
5024003 paper wasp Polistes dominula close up of larvae in paper comb
5024014 paper wasp Polistes dominula Pupae and two stages of larvae extracted from comb.
5024024 paper wasp Polistes dominula Fanning colony for temperature regulation
5024053 paper wasp Polistes dominula chewing wood fibers from weathered wood.
2200078 California pear sawfly Pristiphora abbreviata May 2, 2006
2200085 elm leafminer Kaliofenusa ulmi Leafmines about 5-6 days after egg hatch
2200082 elm leafminer Kaliofenusa ulmi leafmines about 10 days after egg hatch
2200091 California pear sawfly Pristiphora abbreviata Adult ovipositing in emerging pear leaf. May 2, 2006.
5000004 California pear sawfly Pristiphora abbreviata Adult ovipositing in emerging pear leaf. May 2, 2006.
5000014 California pear sawfly Pristiphora abbreviata Adult ovipositing in emerging pear leaf. May 2, 2006.
5000015 California pear sawfly Pristiphora abbreviata Adult resting on pear leaf petiole. April 22, 2006.
2200067 raspberry horntail Hartigia cressonii Cane wilting at tip from larval stem tunneling
2200035 California pear sawfly Pristiphora abbreviata Oviposition punctures visible after leaves unroll.
2200036 California pear sawfly Pristiphora abbreviata Early shothole wounds produced by recently emerged larvae
2200038 elm leafminer Kaliofenusa ulmi May 7, 2006
2200039 elm leafminer Kaliofenusa ulmi May 8, 2006
2200040 elm leafminer Kaliofenusa ulmi May 6, 2006
2200041 elm leafminer Kaliofenusa ulmi larvae silhouetted within leaf mine of Siberian elm leaf; May 28, 2006
2200042 hunting wasp Pemphredon spp. Adult resting on sweet pea leaf. May 30, 2006. These small hunting wasps primarily prey on aphids that they cache in excavate pith of rose, raspberry and similar plants
2200043 hunting wasp Pemphredon spp. Adult resting on sweet pea leaf. May 30, 2006. These small hunting wasps primarily prey on aphids that they cache in excavate pith of rose, raspberry and similar plants
2200044 hunting wasp Pemphredon spp. Adult visiting cut rose stem later used for nesting. May 7, 2006. These small hunting wasps primarily prey on aphids that they cache in excavated pith of rose, raspberry and similar plants.
2200045 hunting wasp Pemphredon spp. Adult visiting cut rose stem later used for nesting. May 7, 2006. These small hunting wasps primarily prey on aphids that they cache in excavated pith of rose, raspberry and similar plants.
2200048 ants Formica spp. Adults visiting peony buds. Field ants very commonly visit peony buds in spring and collect a honeydew-like material secreted by the bud. May 7, 2006
1326061 raspberry horntail Hartigia cressonii Larval tunneling pattern on raspberry
1243158 ants Lasius spp.
1243160 ants Lasius spp. Mounding at nest entrance
1455021 elm leafminer Kaliofenusa ulmi
1455049 poplar leaffolding sawfly Phyllocolpa bozemani Young larva in leaf fold
1455051 poplar leaffolding sawfly Phyllocolpa bozemani Leaf fold symptom produced by young larva
1246001 Eulophid wasp Tetrastichus triozae
1243150 Braconid wasp Diaeretiella rapae Parasitized host 'mummies' containing developing parasitoids
1243093 honey bee Apis mellifera Workers over brood area.
1243159 pavement ant Tetramorium caespitum Adults and Larvae
1243085 Sphecid wasp Eremnophila aureonotata Adult carrying saddled prominent prey
1243086 Sphecid wasp Eremnophila aureonotata Adult at nest entrance with saddled prominent prey
1243154 Braconid wasp Cotesia glomeratus Parasitoid pupae in cocoona
1243155 Braconid wasp Cotesia glomeratus Parasitoid pupae in cocoons, adjacent to host larva
1243156 Braconid wasp Cotesia glomeratus Parasitoid larvae emerging from host and beginning to spin cocoons.
1243148 Eulophid wasp Tetrastichus triozae Adult parasitoid of the potato/tomato psyllid
1243149 Eulophid wasp Tetrastichus triozae Host psyllids and one flipped to expose the larval parasitoid
1243151 Braconid wasp Diaeretiella rapae Parasitized host 'mummy' (upper right) containing developing
1243152 Braconid wasp Diaeretiella rapae Parasitized host 'mummy' (upper right) containing developing parasitoid, with mummy borken to expose the
1243153 Braconid wasp Diaeretiella rapae Parasitized host 'mummy' containing developing parasitoid, with mummy borken to expose the larva
1243141 baldfaced hornet Dolichovespula maculata Larva exposed from comb.
1243142 baldfaced hornet Dolichovespula maculata Larvae and capped pupae in comb
1326202 chalcid wasp Phasgonophora sulcata parasitoid of Agrilus spp.
1325099 oak rough bulletgall wasp Disholcaspis quercusmamma Adult at oviposition in dormant bud
1326051 hunting wasp Pemphredon spp. Larval cells in excavated pith
1326053 hunting wasp Pemphredon spp. Recently emerged adult nesting in green ash twig
1326037 raspberry horntail Hartigia cressonii Tunneling with larvae indicated at knife tip on raspberry
1326062 raspberry horntail Hartigia cressonii Wilting symptom of raspberry from larval injury
1326045 leafcutter bee Megachile spp. Petal pieces of sweet pea cut by adult for nesting
1326046 leafcutter bee Megachile spp. Nest cell with pollen exposed from excavated plant pith
1326048 leafcutter bee Megachile spp. Typical leaf cutting injury to wild rose
1325092 carpenter ants Camponotus spp. male and female
1325010 oak apple gall Amphibolips spp. opened to expose interior structure
1325013 California pear sawfly Pristiphora abbreviata larva and feeding injury
1325014 California pear sawfly Pristiphora abbreviata larva and feeding injury
1325015 California pear sawfly Pristiphora abbreviata larva and feeding injury

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