| 5454480 |
thistle tortoise beetle |
Cassida rubiginosa |
Larva and feeding damage |
| 5436207 |
Canada thistle stem gall fly |
Urophora cardui |
normal gall (L) and one with winter bird predation (R) |
| 5454489 |
musk thistle flower fly |
Cheilosia corydon |
Larval damage descending in stem |
| 5454488 |
musk thistle flower fly |
Cheilosia corydon |
|
| 5436107 |
Pteromalid Wasp |
Pteromalus sequester |
Ripe seed pod showing broom seed weevil parasite (Pteromalus sequester) emergence hole |
| 0026035 |
Canada thistle bud weevil |
Larinus planus |
to flower buds |
| 0021080 |
Mediterranean sage root crown weevil |
Phrydiuchus tau |
|
| 0023007 |
Scottish broom seed weevil |
Exapion fuscirostre |
adult feeding damage |
| 5436200 |
musk thistle head weevil |
Rhinocyllus conicus |
oviposition sites (brown spots on flower bracts of seed head weevil (hiding) |
| 5435919 |
Mediterranean tamarisk beetle |
Diorhabda elongata |
heavy defoliation by larvae, Haystack Rock, OR. JULY 2008 |
| 5436258 |
Canada thistle bud weevil |
Larinus planus |
damage by introduced weevil Larinus planus |
| 5436235 |
thistle crown weevil |
Trichosirocalus horridus |
adult feeding scars on leaf, oval windows |
| 5436236 |
thistle crown weevil |
Trichosirocalus horridus |
adult feeding scars on leaf, oval windows |
| 5436189 |
thistle tortoise beetle |
Cassida rubiginosa |
heavy leaf damage |
| 5436213 |
musk thistle flower fly |
Cheilosia corydon |
dead terminal tip and flower buds from attack by stem boring fly |
| 5436215 |
thistle crown weevil |
Trichosirocalus horridus |
attack site of crown weevil, bud is destroyed. |
| 5436216 |
thistle crown weevil |
Trichosirocalus horridus |
attack site of crown weevil, bud is destroyed. |
| 5435859 |
black-margined loosestrife beetle |
Galerucella calmariensis |
|
| 5436140 |
ragwort seed fly |
Botanophila seneciella |
dark spot is initial indication of infested seed head with ragwort seed fly larva |
| 5436152 |
cinnabar moth |
Tyria jacobaeae |
beginning stage of late instar cinnabar moth larvae attack in July, compare to later defoliation. |
| 5436156 |
cinnabar moth |
Tyria jacobaeae |
late stage of cinnabar moth larvae attack in August, compare to early defoliation. |
| 1416045 |
toadflax seed weevil |
Rhinusa antirrhini |
Larvae feeding inside yellow toadflax seed capsules. |
| 5435857 |
black-margined loosestrife beetle |
Galerucella calmariensis |
Horseshoe Lake 2005 after Galerucella outbreak, heavy defoliation by first generation |
| 5435823 |
defoliating hemlock moth |
Agonopterix alstroemeriana |
larval tube made by - poison hemlock leaf tier |
| 5435824 |
defoliating hemlock moth |
Agonopterix alstroemeriana |
larval tube made by - poison hemlock leaf tier |
| 5435920 |
Mediterranean tamarisk beetle |
Diorhabda elongata |
extreme defoliation at Haystack Rock site AUG 2008 (After photo) |
| 5435931 |
Mediterranean tamarisk beetle |
Diorhabda elongata |
heavy defoliation at Haystack Rock. |
| 5435874 |
root-boring weevil |
Hylobius transversovittatus |
adult feeding damage (ragged edge on center leaf) and frass (ink spot). Adults are generally nocturnal, so this is a good way to determine their presence. |
| 1350036 |
yellow star thistle gall fly |
Urophora sirunaseva |
emergence hole |
| 5435827 |
defoliating hemlock moth |
Agonopterix alstroemeriana |
heavy defoliation caused by larval poison hemlock leaf tier |
| 5435829 |
defoliating hemlock moth |
Agonopterix alstroemeriana |
heavy stand defoliation caused by larval poison hemlock leaf tier |
| 5435767 |
brown-legged spurge flea beetle |
Aphthona lacertosa |
damage by flea beetles on left has sandy soil. Area on right has clay soil and little control. |
| 5435914 |
Russian thistle moth |
Coleophora klimeschiella |
larval damage, leaf miner |
| 5435916 |
Russian thistle moth |
Coleophora klimeschiella |
larval feeding damage |
| 5435756 |
lesser knapweed flower weevil |
Larinus minutus |
lightly attacked plant (L) heavily attacked plant (R) by adult seed weevils |
| 5435839 |
puncturevine seed weevil |
Microlarinus lareynii |
adult feeding scars (small white oval marks (left), unattacked stem (right) |
| 5435840 |
puncturevine seed weevil |
Microlarinus lareynii |
adult feeding scars (small white oval marks (right), unattacked stem (left) |
| 1350035 |
yellow star thistle gall fly |
Urophora sirunaseva |
woody gall |
