William M. Ciesla's Images
Title: OwnerOrganization: Forest Health Management International
Unit: Fort Collins, CO.
Country: United States
 |
Bill Ciesla is a forest health specialist and owner of Forest Health Management International, a consulting company based in Fort Collins, CO. Bill received his undergraduate and graduate degrees in forestry and forest entomology from the State University of New York, College of Environmental Science and Forestry at Syracuse University, Syracuse, NY. He has held assignments with USDA Forest Service as a forest entomologist and forest health program manager in Asheville, NC, Pineville, LA, Missoula, MT, Davis, CA, Fort Collins, CO and Portland, OR. From 1990 to 1995, he served as Forest Protection Officer for the Food and Agriculture Organization in Rome, Italy. His areas of interest include biology and management of forest insects and diseases and the use of remote sensing for forest damage assessment Bill is an avid photographer, specializing in close ups of insects and wildflowers and of forest damage. |
| 294 Images of 72 Subjects | View Subject List | View Image Details | View Thumbnails |
| Image | Subject Name | Scientific Name | Description |
|---|---|---|---|
| 1309007 | oak rough bulletgall wasp | Disholcaspis quercusmamma | Galls, Fort Collins, CO. |
| 2122049 | poplar twiggall fly | Hexomyza schineri | Galls, Fort Collins, CO. |
| 2122020 | cooley spruce gall adelgid | Adelges cooleyi | Gall |
| 2122021 | cooley spruce gall adelgid | Adelges cooleyi | Gall. Fort Collins, CO |
| 3943079 | Asian chestnut gall wasp | Dryocosmus kuriphilus | Galls on branches |
| 5466861 | spruce beetle | Dendroctonus rufipennis | |
| 5466860 | spruce beetle | Dendroctonus rufipennis | |
| 5466857 | spruce beetle | Dendroctonus rufipennis | |
| 5466790 | elm leaf beetle | Xanthogaleruca luteola | |
| 5461636 | European spruce bark beetle | Ips typographus | exit holes |
| 5461637 | European spruce bark beetle | Ips typographus | |
| 5461635 | European spruce bark beetle | Ips typographus | |
| 5461634 | European spruce bark beetle | Ips typographus | |
| 5461631 | horse chestnut leafminer | Cameraria ohridella | |
| 5461557 | eucalyptus weevil | Gonipterus scutellatus | |
| 5461632 | horse chestnut leafminer | Cameraria ohridella | |
| 5461629 | horse chestnut leafminer | Cameraria ohridella | |
| 5461630 | horse chestnut leafminer | Cameraria ohridella | |
| 1587050 | spruce beetle | Dendroctonus rufipennis | spruce beetle mortality |
| 1587031 | pine engraver | Ips pini | PP topkilled by Ips pini |
| 1274018 | pinyon ips | Ips confusus | Heavy mortality. Mesa Verde N.P., CO. 3rd place in the Southern Forest Insect Work Conference Photo Slaon in the category of Forest Insect Damage. |
| 1546001 | small southern pine engraver | Ips avulsus | Upper crown of longleaf pine killed by Ips avulsus. |
| 0758110 | Ips engraver beetles | Ips spp. | Aerial view of scattered tree mortality in longleaf pine. |
| 0758111 | Ips engraver beetles | Ips spp. | Aerial view of scattered tree mortality. |
| 5382388 | Ponderosa pine needleminer | Coleotechnites ponderosae | Damage to foliage |
| 5382389 | Ponderosa pine needleminer | Coleotechnites ponderosae | Mined foliage |
| 5382468 | Ponderosa pine needleminer | Coleotechnites ponderosae | discoloration due to needle mining |
| 5382469 | Ponderosa pine needleminer | Coleotechnites ponderosae | discoloration due to needle mining |
| 5382470 | Ponderosa pine needleminer | Coleotechnites ponderosae | discoloration due to needle mining |
| 3948068 | flatheaded or metallic wood borer | Flatheaded wood borer (Family Buprestidae) in stem, Blue Nile Valley. | |
| 3948070 | long-horned beetles | Roundheaded wood borer (Family Cerambycidae) in stem of Acacia nilotica, Blue Nile Valley. | |
| 0758109 | Ips engraver beetles | Ips spp. | Bark slabs provide a source of beetles that have subsequently attacked standing trees. |
| 0758112 | Ips engraver beetles | Ips spp. | Aerial view of scattered tree mortality in a young pine plantation. |
| 1254023 | white pine weevil | Pissodes strobi | Dead leader in young Engelmann spruce |
| 5382346 | large aspen tortrix | Choristoneura conflictana | Aerial view of defoliation of aspen caused by the large aspen tortix |
| 5382347 | large aspen tortrix | Choristoneura conflictana | Aspens defoliated by large aspen tortix |
| 5382380 | large aspen tortrix | Choristoneura conflictana | Defoliation of quaking aspen |
| 5382393 | Douglas-fir beetle | Dendroctonus pseudotsugae | Aerial view of tree mortality |
| 5382394 | Douglas-fir beetle | Dendroctonus pseudotsugae | Aerial view of tree mortality |
| 5382396 | Douglas-fir beetle | Dendroctonus pseudotsugae | |
| 5382397 | Douglas-fir beetle | Dendroctonus pseudotsugae | Aerial view of tree mortality |
| 5382398 | Douglas-fir tussock moth | Orgyia pseudotsugata | Aerial view of defoliation |
| 5382405 | western pine beetle | Dendroctonus brevicomis | Galleries |
| 5382433 | honeylocust leafhopper | Macropsis fumipennis | Insects and damage to foliage |
| 5382406 | western pine beetle | Dendroctonus brevicomis | Tree mortality adjacent to old burn |
| 5382412 | fall webworm | Hyphantria cunea | Aerial view of tents and defoliation |
| 5382413 | fall webworm | Hyphantria cunea | Aerial view of defoliation and tents |
| 5382430 | blue spruce engraver | Ips hunteri | Aerial view of an infestation |
| 5382435 | mountain pine beetle | Dendroctonus ponderosae | Aerial view of tree mortality |
| 5382436 | mountain pine beetle | Dendroctonus ponderosae | Aerial view of tree mortality |
| 5382437 | mountain pine beetle | Dendroctonus ponderosae | Aerial view of tree mortality |
| 5382438 | mountain pine beetle | Dendroctonus ponderosae | Tree mortality |
| 5382439 | mountain pine beetle | Dendroctonus ponderosae | Aerial view of a thinned stand with heavy damage |
| 5382440 | mountain pine beetle | Dendroctonus ponderosae | Aerial view of thinned stand with heavy damage |
| 5382441 | mountain pine beetle | Dendroctonus ponderosae | Aerial view of heavy tree mortality |
| 5382442 | mountain pine beetle | Dendroctonus ponderosae | Aerial view of fresh attacks in ponderosa pine amid older dead lodgepole pines, Colorado State Forest |
| 5382500 | western spruce budworm | Choristoneura freemani | Defoliation of Engelmann spruce and subalpine fir |
| 5382501 | western spruce budworm | Choristoneura freemani | Heavy defoliation of Engelmann spruce and subalpine fir |
| 5382502 | western spruce budworm | Choristoneura freemani | Aerial view of defoliation of mixed conifers. |
| 0017001 | spiny caterpillar | Ormiscodes cinnamomea | defoliation |
| 0017005 | nun moth | Lymantria monacha | defoliation |
| 0017006 | nun moth | Lymantria monacha | defoliation to understory |
| 0017010 | Mediterranean pine engraver beetle | Orthotomicus erosus | Pinus brutia killed by Mediterranean pine beetle, Turkish Cyprus |
| 0017013 | pine processionary moth | Thaumetopoea pityocampa | Defoliation by early instar larvae |
| 0017015 | pine processionary moth | Thaumetopoea pityocampa | heavy defoliation |
| 0017020 | Masson pine caterpillar | Dendrolimus punctatus | defoliation |
| 0017024 | Sirex woodwasp | Sirex noctilio | Exit holes |
| 0017040 | Sirex woodwasp | Sirex noctilio | Aerial view of tree mortality |
| 0017041 | Sirex woodwasp | Sirex noctilio | Aerial view of tree mortality in plantations |
| 0017042 | Sirex woodwasp | Sirex noctilio | Aerial view of tree mortality in pine plantations |
| 0017043 | Sirex woodwasp | Sirex noctilio | Aerial view of tree moratlity in a pine plantation |
| 0017044 | Sirex woodwasp | Sirex noctilio | Aerial view of tree mortality in pine plantation |
| 0017045 | Sirex woodwasp | Sirex noctilio | |
| 0017046 | Sirex woodwasp | Sirex noctilio | Aerial view of tree mortality in a pine plantation |
| 0017062 | Sirex woodwasp | Sirex noctilio | Aerial view of plantation with low level of tree mortality |
| 0017069 | Sirex woodwasp | Sirex noctilio | Plantation harvested because of heavy damage. |
| 0017070 | Sirex woodwasp | Sirex noctilio | Plantation harvested because of heavy damage. |
| 0758019 | oak rough bulletgall wasp | Disholcaspis quercusmamma | Galls on branches of bur oak |
| 0758020 | cooley spruce gall adelgid | Adelges cooleyi | Green gall with nymphs |
| 0758022 | western spruce budworm | Choristoneura freemani | Damage to new growth on grand fir |
| 0758035 | gypsy moth | Lymantria dispar | Oak mortality due to repeated defoliation by gypsy moth |
| 0758037 | gypsy moth | Lymantria dispar | Color infrared aerial photo taken froma U-2 aircraft showing defoliation by gypsy moth |
| 0758038 | gypsy moth | Lymantria dispar | Color infrared aerial photo taken from a U-2 showing heavy defoliation by gypsy moth |
| 0758083 | beech scale | Cryptococcus fagisuga | Beech tree with chlorotic foliage, a symptom of beech bark disease. |
| 0758084 | beech scale | Cryptococcus fagisuga | Close up of scale insect, Cryptococcus fagisuga on beech bark. |
| 0758101 | southern pine beetle | Dendroctonus frontalis | Two active multiple tree spots |
| 0758102 | southern pine beetle | Dendroctonus frontalis | Aerial view of a multiple tree spot. |
| 0758103 | southern pine beetle | Dendroctonus frontalis | Aerial view of fading and dead pines in a large spot. |
| 0758104 | southern pine beetle | Dendroctonus frontalis | Aerial view is a large infestation. |
| 0758105 | southern pine beetle | Dendroctonus frontalis | Aerial view of a large infestation in the Four Notch Wilderness candidate study area. |
| 0758106 | southern pine beetle | Dendroctonus frontalis | Aerial view of a large infestation at Four Notch Wilderness Study Area |
| 0758107 | pine engraver | Ips pini | Top kill caused by pine engraver |
| 0758108 | Ips engraver beetles | Ips spp. | Logs at a rail siding provide a source of beetles that have subsequently attacked standing trees. |
| 0758119 | elm spanworm | Ennomos subsignaria | Defoliation on mountain slope. |
| 0758120 | walkingstick | Diapheromera femorata | Aerial view of defoliation of hardwoods at Winding Stair Mountain |
| 0758121 | walkingstick | Diapheromera femorata | Aerial view of defoliation of hardwood forests at Winding Stair Mountain |
| 0758122 | mountain pine beetle | Dendroctonus ponderosae | Aerial view of tree mortality. Nine Mile Creek |
| 0758123 | mountain pine beetle | Dendroctonus ponderosae | Aerial view of tree mortality. Nine Mile Creek |
| 0758124 | mountain pine beetle | Dendroctonus ponderosae | Color aerial photo showing effect of stand density on occurrence of beetle attack. Nine Mile Creek |
| 0758126 | mountain pine beetle | Dendroctonus ponderosae | Aerial view of tree mortality. |
| 0758127 | mountain pine beetle | Dendroctonus ponderosae | Aerial view of tree mortality |
| 0758128 | mountain pine beetle | Dendroctonus ponderosae | Aerial view of tree mortality. |
| 0758129 | mountain pine beetle | Dendroctonus ponderosae | Aerial view of tree mortality. Note, this scene shows mortality caused by two generations of beetles. The yellow-green crowns were attacked one year ago and the reddish brown crowns were attacked two years ago. |
| 0758130 | mountain pine beetle | Dendroctonus ponderosae | Aerial view of severe tree mortality in lodgepole pine |
| 0758131 | mountain pine beetle | Dendroctonus ponderosae | Aerial view of severe tree mortality. The line at photo center is the US/Canada border. This photo illustrates that insects do not respect political boundaries. |
| 0758134 | California fivespined ips | Ips paraconfusus | Trees with top kill from Ips attack, Rubicon River drainage. |
| 0758135 | California fivespined ips | Ips paraconfusus | Top kill in large ponderosa pines |
| 0758136 | bark beetles | Aerial view of a bark beetle spot in ponderosa pine. The spot is the result of the combined attacks of Ips paraconfusus and Dendroctonus brevicomis at Rubicon River drainage area | |
| 0758137 | bark beetles | Aerial view of a barkbeetle infestation, The infestation is the result of a combined attack by Ips paraconfusus and Dendroctonus brevicomis at Rubicon River drainage area | |
| 0758138 | bark beetles | Aerial of scattered tree mortality in ponderosa pine. The infestations are the result of combined attacks of Ips paraconfusus and Dendroctonus brevicomis at Rubicon River drainage area | |
| 0758139 | bark beetles | Aerial view of tree mortality. The infestations are the result of a combined attack of Ips paraconfusus and Dendroctonus brevicomis at Rubicon River drainage area | |
| 0758140 | bark beetles | Aerial view of tree mortality. The attacks are a combination of Ips paraconfusus and Dendroctonus brevicomis. | |
| 0758141 | bark beetles | Trees killed by a combination of Ips paraconfusus and Dendroctonus brevicomis at Rubicon River drainage | |
| 0758142 | bark beetles | Aerial view of tree mortality caused by a combination of Ips paraconfusus and Dendroctonus brevicomis. | |
| 0758143 | Douglas-fir beetle | Dendroctonus pseudotsugae | Aerial view of tree mortality, North Fork Clearwater River |
| 0758144 | Douglas-fir beetle | Dendroctonus pseudotsugae | Aerial view of tree mortality, North Fork Clearwater River |
| 0758145 | Douglas-fir beetle | Dendroctonus pseudotsugae | Aerial view of tree mortality, North Fork Clearwater River |
| 0758146 | Douglas-fir beetle | Dendroctonus pseudotsugae | Aerial view of tree mortality caused by Douglas-fir beetle, North Fork Clearwater River |
| 0758147 | Douglas-fir beetle | Dendroctonus pseudotsugae | Tree mortality |
| 0758148 | Douglas-fir beetle | Dendroctonus pseudotsugae | Multiple tree spot; South Fork Clearwater River |
| 0758149 | spruce beetle | Dendroctonus rufipennis | Aerial view of tree mortality |
| 0758150 | spruce beetle | Dendroctonus rufipennis | Aerial view of tree mortality |
| 1254024 | western spruce budworm | Choristoneura freemani | Defoliation on young grand fir, Mt. Hood NF, OR |
| 5382504 | western tent caterpillar | Malacosoma californicum | Heavy defoliation |
| 5382497 | western balsam bark beetle | Dryocoetes confusus | Aerial view of tree mortality |
| 5382444 | mountain pine beetle | Dendroctonus ponderosae | Aerial view of attacks in both lodgepole pines (red-orange) and ponderosa pines (yellow) |
| 5382445 | mountain pine beetle | Dendroctonus ponderosae | Aerial view of tree mortality in ponderosa and lodgepole pines, near Glen Haven |
| 5382446 | mountain pine beetle | Dendroctonus ponderosae | Aerial view of tree mortality. Note differences in attack density by tree size |
| 5382447 | mountain pine beetle | Dendroctonus ponderosae | Aerial view of tree mortality, Colorado State Forest |
| 5382448 | mountain pine beetle | Dendroctonus ponderosae | Aerial view of tree mortality, Tennessee Mountain |
| 5382449 | mountain pine beetle | Dendroctonus ponderosae | Aerial view of tree mortality, Tennessee Mountain |
| 5382450 | mountain pine beetle | Dendroctonus ponderosae | Aerial view of a large spot, Woodland Mountain |
| 5382451 | mountain pine beetle | Dendroctonus ponderosae | Aerial view of a large spot, Woodland Mountain |
| 5176078 | flatheaded or metallic wood borer | Twig mortality caused by a twig borer of the family Buprestidae on coigue, Nothofagus dombeyi, VIII Region, Chile | |
| 5176079 | flatheaded or metallic wood borer | Twig mortality on Coigue, Nothofagus dombeyi, caused by an unknown twig borer of the family Buprestidae, VIII Region, Chile | |
| 1248033 | twig beetles | Pityophthorus spp. | Damage to twigs caused by a pinyon pine twig beetle near Durango, CO |
| 1254001 | mountain pine beetle | Dendroctonus ponderosae | Pitch tubes on bark surface |
| 5346005 | large aspen tortrix | Choristoneura conflictana | Rolled leaf containing larva, Culebra Range, CO, July 2007 |
| 5346041 | western spruce budworm | Choristoneura freemani | Close up of bud damage and defoliation of new growth |
| 5346044 | western tent caterpillar | Malacosoma californicum | Complete defoliation of aspen, Culebra Range, CO, July 2007 |
| 5346048 | western tent caterpillar | Malacosoma californicum | Defoliaton of aspen, Mousca Pass, Sangre de Cristo Range, Colorado, July 2007 |
| 1428088 | mountain pine beetle | Dendroctonus ponderosae | Fresh fading ponderosa pine due to previous year's mountain pine beetle attack. |
| 1428089 | mountain pine beetle | Dendroctonus ponderosae | Fresh fading pines due to previous year's beetle attack. |
| 0758239 | Douglas-fir beetle | Dendroctonus pseudotsugae | Trees killed by Douglas-fir beetle. |
| 0758247 | pandora moth | Coloradia pandora | Heavy defoliation of ponderosa pine |
| 0758248 | pandora moth | Coloradia pandora | Heavy defoliation of ponderosa pine forests |
| 5135053 | pinyon ips | Ips confusus | Aerial survey 2006; Aerial view of damage, near Canon City, CO |
| 5135078 | Douglas-fir tussock moth | Orgyia pseudotsugata | Defoliation in urban area near Aspen Park, CO |
| 5135082 | Douglas-fir tussock moth | Orgyia pseudotsugata | Partial defoliation of Douglas-fir, North turkey Creek near Aspen Park, CO |
| 5135083 | Douglas-fir tussock moth | Orgyia pseudotsugata | Partial defoliation of Douglas-fir, North Turkey Creek near Aspen Park, CO |
| 5136002 | pine tussock moth | Dasychira grisefacta | Defoliation, western Nebraska |
| 5136003 | pine tussock moth | Dasychira grisefacta | Defoliation, |
| 5136004 | pine tussock moth | Dasychira grisefacta | Defoliation, western NE |
| 5136005 | pine tussock moth | Dasychira grisefacta | Defoliation, western NE |
| 5136006 | pine tussock moth | Dasychira grisefacta | Defoliation, western NE |
| 5136007 | pine tussock moth | Dasychira grisefacta | Defoliation, western NE |
| 5136008 | pine tussock moth | Dasychira grisefacta | Needle damage, western NE |
| 5136090 | western tent caterpillar | Malacosoma californicum | Aerial view of defoliation, Mosca Pass, Sangre de Cristo Range, CO |
| 5136091 | western tent caterpillar | Malacosoma californicum | Aerial view of defoliation, Sangre de Cristo Range, CO |
| 5136099 | western tent caterpillar | Malacosoma californicum | Aerial view of defoliation, Mosca Pass, Sangre de Cristo Range, CO |
| 5136100 | western tent caterpillar | Malacosoma californicum | Aerial view of defoliation, Mosca Pass, Sangre de Cristo Range, CO |
| 5137001 | western tent caterpillar | Malacosoma californicum | Aerial view of defoliation, Mosca pass, Sangre de Cristo Range, CO |
| 5137002 | western tent caterpillar | Malacosoma californicum | Aerial view of defoliation, Mosca Pass, Sangre de Cristo Range, CO |
| 5137003 | western tent caterpillar | Malacosoma californicum | Aerial view of defoliation, Mosca Pass, Sangre de Cristo Range, CO. |
| 2167040 | western tent caterpillar | Malacosoma californicum | Aerial view of defoliation; 2006 |
| 2167041 | western tent caterpillar | Malacosoma californicum | Aerial view of defoliation; 2006 |
| 2167042 | western tent caterpillar | Malacosoma californicum | Aerial view of defoliation; 2006 |
| 2167003 | balsam woolly adelgid | Adelges piceae | Gout on Fraser fir |
| 2167004 | ocellate gall midge | Acericecis ocellaris | |
| 2167005 | balsam woolly adelgid | Adelges piceae | gout on Fraser fir |
| 2167006 | balsam woolly adelgid | Adelges piceae | Gout on Fraser fir |
| 2167007 | balsam woolly adelgid | Adelges piceae | gout on Fraser fir |
| 2167008 | balsam woolly adelgid | Adelges piceae | Gout on Fraser fir |
| 2167009 | balsam woolly adelgid | Adelges piceae | Gout on Fraser fir |
| 2167018 | hemlock woolly adelgid | Adelges tsugae | Infested foliage |
| 2167019 | hemlock woolly adelgid | Adelges tsugae | Infested foliage, |
| 2167023 | hemlock woolly adelgid | Adelges tsugae | Infested foliage |
| 1241598 | larch casebearer | Coleophora laricella | Defoliation of western larch, Idaho Panhandle National Forest, ID |
| 0758159 | western spruce budworm | Choristoneura freemani | Defoliation of new shoots |
| 0758170 | western spruce budworm | Choristoneura freemani | Defoliation |
| 0758082 | beech scale | Cryptococcus fagisuga | Bark of American beech with symptoms of beech bark disease. |
| 2252094 | pine engraver | Ips pini | |
| 2122028 | Douglas-fir tussock moth | Orgyia pseudotsugata | Aerial view of defoliation near Aspen Park, CO |
| 2122042 | mountain pine beetle | Dendroctonus ponderosae | Aerial view of tree mortality, Pinus contorta, Pinus flexilis, Tennessee Mountain, Nederland, CO |
| 2122043 | mountain pine beetle | Dendroctonus ponderosae | Tree mortality on western slope of the Wet Mountains, CO |
| 2122044 | mountain pine beetle | Dendroctonus ponderosae | Aerial view of tree mortality, Sangre de Cristo Mountains, CO |
| 2122050 | spruce beetle | Dendroctonus rufipennis | Aerial view of faders, Red Mountain, Rio Grande, NF, CO |
| 2122051 | spruce beetle | Dendroctonus rufipennis | Aerial view of faders, Red Mountain, Rio Grande, NF, CO |
| 2122052 | spruce beetle | Dendroctonus rufipennis | Aerial view of faders and tree mortaloty, red Mountain, Rio Grande, NF, CO |
| 2122053 | spruce beetle | Dendroctonus rufipennis | Aerial view of faders and tree mortality, Red Mountain, Rio Grande, NF, CO |
| 2122054 | spruce beetle | Dendroctonus rufipennis | Aerial view of faders and tree mortality, Red Mountain, Rio Grande NF, CO |
| 2122055 | western balsam bark beetle | Dryocoetes confusus | Aerial view of faders, Bull Mountain, Larimer, CO. |
| 2122056 | western spruce budworm | Choristoneura freemani | Aerial view of defoliation in upscale housing development, Bear Mountain, near Evergreen, CO |
| 1248015 | pine engraver | Ips pini | Multiple tree groups of dead and dying lodgepole pines near Evergreen, CO |
| 1248016 | mountain pine beetle | Dendroctonus ponderosae | Large multiple tree spot on the summit of Tennessee Mountain near Nederland, CO. Pinus contorta and P. flexilis |
| 1248017 | mountain pine beetle | Dendroctonus ponderosae | Aerial view of a multiple tree spot on road to Rollins Pass near Rollinsville, CO |
| 1248019 | mountain pine beetle | Dendroctonus ponderosae | Rollinsvile, CO |
| 1248020 | mountain pine beetle | Dendroctonus ponderosae | Fading trees near Willow Creek Pass, CO |
| 1248021 | mountain pine beetle | Dendroctonus ponderosae | Aerial view of heavy mortality near Antero Jct, South Park, CO |
| 1248022 | mountain pine beetle | Dendroctonus ponderosae | Aerial view of heavy mortality in ponderosa pine near Antero Jct, South Park,CO |
| 1248023 | Douglas-fir beetle | Dendroctonus pseudotsugae | Aerial view of tree mortality, San Juan NF, CO |
| 1248024 | fir engraver | Scolytus ventralis | Top Kill in white fir, eastern slope of the Wet Mountains, CO |
| 1248025 | fir engraver | Scolytus ventralis | Aerial view of top kill and tree mortality, Wet Mountains, CO |
| 1248026 | western balsam bark beetle | Dryocoetes confusus | Aerial view of tree mortality near Bull Mountain, Larimer CO, CO |
| 1248030 | Douglas-fir tussock moth | Orgyia pseudotsugata | Aerial view of defoliation in Douglas-fir near Aspen Park, CO |
| 1248031 | spruce beetle | Dendroctonus rufipennis | Aerial view of tree mortality caused by spruce beetle, San Juan NF, CO |
| 1248032 | spruce beetle | Dendroctonus rufipennis | Aerial view of tree mortality caused by spruce beetle, San Juan, N.F., CO |
| 1248038 | blue spruce engraver | Ips hunteri | Top kill caused by a spruce engraver beetle, Ips hunteri, Fort Collins, CO |
| 1248034 | pinyon ips | Ips confusus | |
| 1244004 | giant conifer aphids | Cinara spp. | Hedge with damage, Concha y Toro Winery near Santiago, Chile |
| 1244014 | giant conifer aphids | Cinara spp. | Reserva Natural Yerba Loca, Region Metropolitana, Chile. |
| 1254030 | Douglas-fir tussock moth | Orgyia pseudotsugata | Heavy defoliation of grand fir and Douglas fir, Wallowa Whitman NF, OR. |
| 1254034 | western tent caterpillar | Malacosoma californicum | Tent and defoliation on quaking aspen, Roosevelt NF, CO. |
| 1254035 | conifer sawflies | Neodiprion spp. | Defoliation, Ochoco NF, OR. |
| 1254039 | brownheaded ash sawfly | Tomostethus multicinctus | Boulder, CO. |
| 1254041 | elm leaf beetle | Xanthogaleruca luteola | Fort Collins, CO. |
| 1254056 | cooley spruce gall adelgid | Adelges cooleyi | Fort Collins, CO. |
| 1254004 | mountain pine beetle | Dendroctonus ponderosae | Fading pines indicative of beetle attack, Red Feather Lakes, CO. |
| 1254005 | mountain pine beetle | Dendroctonus ponderosae | Aerial view of dead and dying trees, Black Hills NF, SD |
| 1254007 | Douglas-fir beetle | Dendroctonus pseudotsugae | Fading Douglas-fir, Roosevelt, NF, CO |
| 1254009 | pine engraver | Ips pini | Top kill in ponderosa pine, Warm Springs IR, OR |
| 1254010 | blue spruce engraver | Ips hunteri | Fading spruces due to Blue spruce engraver beetle attack, Timnath, CO. |
| 1254011 | blue spruce engraver | Ips hunteri | Pitch tubes and boring dust on bark surface, Timnath, CO. |
| 1254080 | purple erineum maple mite | Eriophyes calcercis | Rossevelt NF, CO. |
| 1254082 | aspen leafminer | Phyllocnistis populiella | Leaf mining, Roosevelt NF, CO. |
| 2500001 | fir engraver | Scolytus ventralis | Rio Grande NF, CO. |
| 2500002 | fir engraver | Scolytus ventralis | Rio Grande NF, CO. |
| 2500003 | pinyon ips | Ips confusus | Pitch tubes and boring dust on the bark surface of pinyon pine. |
| 2500004 | fir engraver | Scolytus ventralis | Aerial view of tree mortality, San Juan NF, CO |
| 2500005 | pinyon ips | Ips confusus | Aerial view of group of trees killed by pinyon engraver beetle, Rio Grande NF, CO |
| 2500006 | pinyon ips | Ips confusus | Scattered tree mortality caused by pinyon engraver beetle, Rio Grande, NF, CO |
| 2500007 | pinyon ips | Ips confusus | Scattered tree mortality caused by pinyon engraver beetle, Rio Grande, NF, CO |
| 2500008 | pinyon ips | Ips confusus | Group killed by pinyon engraver beetle, Rio Grande NF, CO. |
| 2500010 | bark beetle | Phloeosinus armatus | Adult maturation feeding, northern Cyprus. |
| 2500015 | pine shoot beetle | Tomicus destruens | Group of old dead trees, northern Cyprus. |
| 1307018 | pineapple mealybug | Dysmicoccus brevipes | Group of young Casuarina equisetifolia killed by root infestation of Dysmicoccus brevipes, north of Mombasa, Kenya. |
| 1232002 | pine processionary moth | Thaumetopoea pityocampa | Heavy defoliation and tent of mature larvae |
| 1232008 | pine processionary moth | Thaumetopoea pityocampa | Tent and heavy defoliation on young pine |
| 1232009 | pine processionary moth | Thaumetopoea pityocampa | Heavy defoliation in a young pine plantation, northern Cyprus |
| 1232010 | pine processionary moth | Thaumetopoea pityocampa | Heavy defoliation and tents, northern Cyprus |
| 1428130 | black pine bark beetle | Hylastes ater | Mortality of regeneration caused by maturation feeding of adults. |
| 1428131 | black pine bark beetle | Hylastes ater | Mortality of natural regeneration of pine caused by adult feeding. Forestal Valparasio, near Valparaiso |
| 1428132 | black pine bark beetle | Hylastes ater | Injury to root collar of seedling caused by adult maturation feeding. |
| 1428133 | black pine bark beetle | Hylastes ater | Breeding attack in the root collar of a young pine also infected by a black stain fungus, Leptographium spp. Central Chile |
| 1428140 | goldenhaired bark beetle | Hylurgus ligniperda | Adult maturation feeding damage on pine seedling, central Chile. |
| 3943083 | chestnut weevil | Mecorhis cumulatus | Damage to branch containing chestnut burrs by adult feeding. |
| 3943085 | butterflies, moths or skippers | Lepidoptera (Order) N/A | Frass and webbing on chestnut burr indicative of borer attack. |
| 3943086 | butterflies, moths or skippers | Lepidoptera (Order) N/A | Discoloed chestnut burr indicative of attack by a lepidopterous borer. |
| 3948027 | Douglas-fir beetle | Dendroctonus pseudotsugae | Woman processing log for construction of Buddhist temple. Logs at this site were Douglas-fir imported from the US and were infested with live beetles. |
| 3948028 | Douglas-fir beetle | Dendroctonus pseudotsugae | Examining Douglas-fir beetle logs imported from the US and infested with Douglas fir beetle. |
| 3948030 | pine processionary moth | Thaumetopoea pityocampa | Pyrennes Mountains |
| 3948058 | seed chalcid | Megastigmus spp. | Exit holes on juniper berries, Ziarat Forest. |
| 3948084 | eastern juniper bark beetle | Phloeosinus bicolor | Boring dust on windthrown juniper, Krisia Forest |
| 1428083 | white pine weevil | Pissodes strobi | leader damage at. |
| 1428087 | mountain pine beetle | Dendroctonus ponderosae | Group of ponderosa pines killed by mountain pine beetle. |
| 3948003 | cypress aphid | Cinara cupressivora | Cypress hedge damaged by cypress aphid infestation. |
| 3948004 | cypress aphid | Cinara cupressivora | Damage to cypress plantation near Muguga. |
| 3948005 | cypress aphid | Cinara cupressivora | |
| 3948006 | cypress aphid | Cinara cupressivora | Damage to a forest plantation. |
| 3948007 | cypress aphid | Cinara cupressivora | |
| 3948011 | cypress aphid | Cinara cupressivora | Damage to mature plantation, Rift Valley Escarpment. |
| 3948012 | cypress aphid | Cinara cupressivora | Feeding damage on indigenous juniper, lower slopes of Mount Kenya. |
| 3948014 | cypress aphid | Cinara cupressivora | Aerial view of tree mortality in cypress plantation near Eldoret |
| 2912018 | pineapple mealybug | Dysmicoccus brevipes | group tree mortality caused by the root infesting scale insect, Africa |
| 3943008 | leucaena psyllid | Heteropsylla cubana | Heavy damage, Curieuse Island |
| 3943011 | termites | tubes, Green Belt | |
| 3943016 | Oriental scale | Aonidiella orientalis | Heavy damage |
| 3943049 | Nantucket pine tip moth | Rhyacionia frustrana | Attack in pine tip near Puerto Cabezas. |
| 1428103 | European elm scale | Eriococcus spuria | on the Colorado State University campus covered with black sooty mold indicative of infestation by European elm scale. |
| 1428106 | southwestern tent caterpillar | Malacosoma incurvum | Tents, southern Utah |
| 1428107 | southwestern tent caterpillar | Malacosoma incurvum | tents in southern Utah |
| 1428108 | southwestern tent caterpillar | Malacosoma incurvum | tents and defoliation in southern Utah |
| 1428111 | engraver beetle | Ips acuminatus | Top kill caused by pine engraver beetle in Pinus sylvestris var. hamata, near Bakuriana. |
| 1428112 | engraver beetle | Ips acuminatus | Top kill in large Pinus sylvestris var. hamata, near Bakuriana. |
| 1428116 | engraver beetle | Ips acuminatus | Top kill of Pinus sylvestris var. hamata, near Bakuriana. |
| 1428021 | sacred fir looper | Evita hyalinaria hyalinaria | Aerial view of defoliation near San Felipe del Progresso |
| 1428022 | sacred fir looper | Evita hyalinaria hyalinaria | Aerial view of defoliation near San Felipe del Progresso |
| 1428023 | sacred fir looper | Evita hyalinaria hyalinaria | Aerial view of defoliation near San Felipe del Progresso. |
| 1428024 | sacred fir looper | Evita hyalinaria hyalinaria | Defoliation of sacred fir near San Felipe del Progresso. |
| 1428025 | sacred fir looper | Evita hyalinaria hyalinaria | Defoliation near San Felipe del Progresso. |
| 1428026 | sacred fir looper | Evita hyalinaria hyalinaria | Defoliation near San Felipe del Progresso. |
| 1428029 | sacred fir looper | Evita hyalinaria hyalinaria | Aerial view of defoliation near San Felipe del Progresso. |
| 1428031 | goldenhaired bark beetle | Hylurgus ligniperda | Heavy attack in fresh logging slash |
| 1428034 | goldenhaired bark beetle | Hylurgus ligniperda | Boring dust indicative of attack in fresh stump, VIII Region. |
| 0758158 | western balsam bark beetle | Dryocoetes confusus | Scattered tree mortality |
| 0758156 | fir engraver | Scolytus ventralis | Aerial view of tree mortality. |
| 0758155 | fir engraver | Scolytus ventralis | Aerial view of tree mortality. |
| 0758154 | fir engraver | Scolytus ventralis | Aerial view of multiple tree spots |
| 0758152 | spruce beetle | Dendroctonus rufipennis | Aerial view of tree mortality |
| 0758151 | spruce beetle | Dendroctonus rufipennis | Aerial view of tree mortality |
| 0758157 | fir engraver | Scolytus ventralis | Trees attacked by Scolytus ventralis showing variety of attack patterns: top kill, branch attacks and total tree kill. |
| 3948015 | cypress aphid | Cinara cupressivora | Aerial view of cypress hedge around homestead killed by cypress aphid. This type of damage poses a high risk of fire damage. |
| 3948029 | Douglas-fir beetle | Dendroctonus pseudotsugae | Logs imported from the US for construction of a buddhist temple and infested with Douglas-fir beetle. |
| 2252030 | Douglas-fir tussock moth | Orgyia pseudotsugata | Aerial view of defoliation |
