| 0580015 |
Biological Control |
site before release |
| 1594249 |
Larva(e) |
|
| 1594248 |
Larva(e) |
|
| 1594246 |
Larva(e) |
|
| 1594247 |
Larva(e) |
|
| 1594245 |
Larva(e) |
|
| 1594244 |
Larva(e) |
|
| 1594243 |
Larva(e) |
|
| 1594241 |
Biological Control |
|
| 1594242 |
Larva(e) |
|
| 1594240 |
Larva(e) |
|
| 1594239 |
Larva(e) |
|
| 1594238 |
Larva(e) |
|
| 1594237 |
Larva(e) |
|
| 1594235 |
Larva(e) |
|
| 1594236 |
Larva(e) |
|
| 1594234 |
Larva(e) |
|
| 1594232 |
Larva(e) |
|
| 1594233 |
Larva(e) |
|
| 1594231 |
Larva(e) |
|
| 1594230 |
Larva(e) |
|
| 1594229 |
Larva(e) |
|
| 1594228 |
Larva(e) |
|
| 1594227 |
Larva(e) |
|
| 1594225 |
Larva(e) |
|
| 1594226 |
Larva(e) |
|
| 1594224 |
Larva(e) |
|
| 1594223 |
Larva(e) |
|
| 1594222 |
Biological Control |
|
| 1594221 |
Larva(e) |
|
| 1594220 |
Biological Control |
|
| 1594218 |
Larva(e) |
|
| 1594219 |
Larva(e) |
|
| 1594217 |
Biological Control |
|
| 1594216 |
Larva(e) |
|
| 1594214 |
Larva(e) |
|
| 1594215 |
Larva(e) |
|
| 1594213 |
Larva(e) |
|
| 1594212 |
Larva(e) |
|
| 1594211 |
Larva(e) |
|
| 1594210 |
Larva(e) |
|
| 1594209 |
Larva(e) |
|
| 1594208 |
Larva(e) |
|
| 1594207 |
Larva(e) |
|
| 1594205 |
Larva(e) |
|
| 1594206 |
Larva(e) |
|
| 1594204 |
Larva(e) |
|
| 1594203 |
Larva(e) |
|
| 1594201 |
Larva(e) |
|
| 1594202 |
Larva(e) |
|
| 1594200 |
Larva(e) |
|
| 1594199 |
Larva(e) |
|
| 1594198 |
Larva(e) |
|
| 1594194 |
Larva(e) |
|
| 1594196 |
Larva(e) |
|
| 1594197 |
Larva(e) |
|
| 1594193 |
Larva(e) |
|
| 1594195 |
Larva(e) |
|
| 1594192 |
Larva(e) |
|
| 0024038 |
Survey |
examining infested seed heads for larvae |
| 0580017 |
Damage |
tufts of hair rising from infested thistle head |
| 5436223 |
Damage |
flower head, note chewing damage by seed head weevil Rhinocyllus conicus. |
| 5436203 |
Adult(s) |
adult weevil. Note: Not an approved biocontrol agent |
| 0580005 |
Adult(s) |
adult and eggs on thistle head |
| 0580019 |
Adult(s) |
|
| 0025037 |
Adult(s) |
laying eggs on plant |
| 0023074 |
Adult(s) |
on leaves |
| 0023076 |
Larva(e) |
in the flower head |
| 5436200 |
Damage |
oviposition sites (brown spots on flower bracts of seed head weevil (hiding) |
| 5436201 |
Adult(s) |
adult weevil. Note: Not an approved biocontrol agent |
| 5436202 |
Adult(s) |
adult weevil. Note: Not an approved biocontrol agent |
| 0025028 |
Adult(s) |
on the flower head |
| 0024035 |
Adult(s) |
female laying egg |
| 0025021 |
Adult(s) |
mating |
| 0025029 |
Egg(s) |
encased eggs on the back of a flower head |
| 0025030 |
Larva(e) |
in the flower head |
| 0580014 |
Larva(e) |
feeding on receptacle of thistle head |
| 0580020 |
Pupa(e) |
|
| 5436230 |
Adult(s) |
|
| 5436231 |
Adult(s) |
Adult weevil on stem, note feeding scars along the stem midrib. This weevil is no longer an approved biocontrol agent. |
| 0025031 |
Larva(e) |
in the stem |
| 0023075 |
Egg(s) |
encased eggs on the back of a flower head |
| 0580021 |
Egg(s) |
on thistle head |
| 5358595 |
Damage |
Seedhead of musk thistle (Carduus nutans) showing damage created by the seedhead weevil, Rhinocyllus conicus, that was introduced as a biological control agent for this noxious weed. |
| 5304072 |
Adult(s) |
|
| 5304073 |
Damage |
Fecal plugs at oviposition sites |
| 5083100 |
Adult(s) |
mating |
| 5084001 |
Adult(s) |
|
| 0025081 |
Survey |
collection |
| 0024043 |
Research |
examining release site |
| 0023078 |
Research |
after release |
| 0023077 |
Research |
before release |
| 0580018 |
|
site five years after release |
| 0580022 |
|
thistle head showing pupation chambers |
| 0025100 |
|
exiting flower head |
