Diptera.info :: Identification queries :: Diptera (adults)
Who is here? 1 guest(s)
 trichoceridae ocelli
|
|
| Andy Chick |
Posted on 12-01-2009 10:33
|
|
Member Location: Under a pile of unidentifed flies! Posts: 58 Joined: 30.11.07 |
hi, has anyone got a pic of the ocelli on Trichoceridae? its my first go at Nematocera |
|
|
|
| pwalter |
Posted on 12-01-2009 14:04
|
 Member Location: Miskolc, Hungary Posts: 3555 Joined: 06.11.08 |
Hi, I made some pics of the head of a Trichocera cf hiemalis female stored in alcohol. Not too sharp... What You need them for?
pwalter attached the following image:  [123.41Kb] |
|
|
|
| pwalter |
Posted on 12-01-2009 14:07
|
|
Member Location: Miskolc, Hungary Posts: 3555 Joined: 06.11.08 |
Closer:
pwalter attached the following image:  [186.28Kb] |
|
|
|
| Andy Chick |
Posted on 12-01-2009 14:25
|
|
Member Location: Under a pile of unidentifed flies! Posts: 58 Joined: 30.11.07 |
hi thanks for that, im running a gnat down Oosterbroeks family key but i normally look at the higher flies, so was having trouble telling if i had, occelli , ruddimentay occelli or just a shadow! |
|
|
|
| Roger Thomason |
Posted on 12-01-2009 14:27
|
 Member Location: Mossbank,Shetland Isles. Posts: 5268 Joined: 17.07.08 |
You could try Andrius from Lithuania (Page 3 of "A" in the members list. I don't know if he has been visiting the site lately, so maybe send him a PM. He is studying them.Regards Roger Don't know where the smiley came from and can't edit it out? Edited by Roger Thomason on 12-01-2009 14:30 |
|
|
|
| pwalter |
Posted on 12-01-2009 14:29
|
|
Member Location: Miskolc, Hungary Posts: 3555 Joined: 06.11.08 |
Good luck with Your gnat, it was a good opportunity for me to see how Trichocera compound eyes look like - would never have checked them |
|
|
|
| Andrius |
Posted on 13-01-2009 19:46
|
|
Member Location: Lithuania Posts: 315 Joined: 27.01.05 |
Well, I've never paid attention to ocelli while discerning Trichoceridae from other families. Usually wing venation, general view of genitalia or simply general view of the insect is enough to tell it is a winter gnat I guess people can tell quite the same about other families they work with - as someone once told here on Diptera.info - "you just know"  |
|
|
|
| pwalter |
Posted on 13-01-2009 20:49
|
|
Member Location: Miskolc, Hungary Posts: 3555 Joined: 06.11.08 |
Now it seems to me that this is a good opportunity to check if I was right with T hiemalis: Here are the pics from the animal: pwalter attached the following image:  [156.47Kb] |
|
|
|
| pwalter |
Posted on 13-01-2009 20:50
|
|
Member Location: Miskolc, Hungary Posts: 3555 Joined: 06.11.08 |
2:
pwalter attached the following image:  [129.2Kb] |
|
|
|
| pwalter |
Posted on 13-01-2009 20:51
|
|
Member Location: Miskolc, Hungary Posts: 3555 Joined: 06.11.08 |
3:
pwalter attached the following image:  [128.06Kb] |
|
|
|
| Andrius |
Posted on 14-01-2009 22:59
|
|
Member Location: Lithuania Posts: 315 Joined: 27.01.05 |
It looks more like T.saltator to me as ovipositor of hiemalis if of slightly different shape and is usually shorter that that seen on your pictures. I've attached the image I have on hiemalis - just sorry for the quality
Andrius attached the following image:  [10.86Kb] Edited by Andrius on 14-01-2009 23:06 |
|
|
|
| Andrius |
Posted on 14-01-2009 23:07
|
|
Member Location: Lithuania Posts: 315 Joined: 27.01.05 |
You could also dissect the genitalia (just separate last sternite from tergites) and check the inner structures - genital fork, genital plate (has two setae in hiemalis and usually 4 in saltator) and spermathecae (3 dark balls) of hiemalis look like those in the picture
Andrius attached the following image:  [16.4Kb] Edited by Andrius on 14-01-2009 23:13 |
|
|
|
| pwalter |
Posted on 14-01-2009 23:11
|
|
Member Location: Miskolc, Hungary Posts: 3555 Joined: 06.11.08 |
Hi, thank You for the infos, I have collected only females this winter but have also males from last, will check them. Best regards, Walter |
|
|
|
| Jump to Forum: |