Who is here? 1 guest(s)
 Calliphora vomitoria?
|
|
| Cor Zonneveld |
Posted on 20-09-2007 21:47
|
 Member Location: Posts: 840 Joined: 14.10.06 |
Last year all my wannabe vomitoria's turned out to be vicina. But now, at the same spot, I think I have seen a real vomitoria. Could anyone confirm my guess? Location: Amstelveen, the Netherlands. Suburban area, fly seen on flowering Ivy. Thanks for your attention Cor Zonneveld |
 |
|
| Cor Zonneveld |
Posted on 20-09-2007 21:48
|
|
Member Location: Posts: 840 Joined: 14.10.06 |
another picture
Thanks for your attention Cor Zonneveld |
|
|
|
| Cor Zonneveld |
Posted on 20-09-2007 21:49
|
|
Member Location: Posts: 840 Joined: 14.10.06 |
and the last one
Thanks for your attention Cor Zonneveld |
|
|
|
| Sundew |
Posted on 20-09-2007 22:31
|
 Member Location: Posts: 3890 Joined: 28.07.07 |
Character combination "black cheek / red beard / anterior spiracle black / basicosta black" fits fine! Our ivy inflorescences, though stamens already dropped, are visited by lots of Calliphoras, and I am searching for C. vomitoria, too. To date all were C. vicina. My small camera is not able to give a sufficiently clear image of the beard hairs, and I found that the colour of the cheeks varies dependent on the light (flash, sunlit face or not.) On your pics the cheeks look also not too black. However, I vote for C. vomitoria and wished I could get such fine pictures, too! Regards, Sundew |
|
|
|
| Tony T |
Posted on 21-09-2007 00:03
|
 Member Location: Posts: 661 Joined: 08.02.07 |
Sundew wrote: Character combination " anterior spiracle black " fits fine! Regards, Sundew 2nd image shows a bright orange ant. spiracle  |
|
|
|
| Cor Zonneveld |
Posted on 21-09-2007 08:11
|
|
Member Location: Posts: 840 Joined: 14.10.06 |
Now I get mystified about the anterior spiracle... Honestly, where should I look to find it, and what kind of structure is it? And what does it mean if it is black, in combination with the red beard (I would say orange, but in discussion on vicina/vomitoria it is always described as red!)? Thanks for your input, nice to know I have a soulmate searching Berlin Ivy! Thanks for your attention Cor Zonneveld |
|
|
|
| Zeegers |
Posted on 21-09-2007 08:36
|
|
Member Location: Posts: 18446 Joined: 21.07.04 |
Some vomitoria have an orange spiracle. I know, it should be forbidden. Theo |
|
|
|
| Sundew |
Posted on 21-09-2007 11:48
|
|
Member Location: Posts: 3890 Joined: 28.07.07 |
The spiracle ("stigmate" in French) is a respiration opening in the thorax. Look at Figs. 3 and 4 in www.nku.edu/~bios...pecies.htm, it is easy to find. Regards, Sundew |
|
|
|
| Tony T |
Posted on 21-09-2007 13:16
|
|
Member Location: Posts: 661 Joined: 08.02.07 |
No need to go 'off-site' to see spiracles. There is a decent image on Diptera.info HERE of the anterior spiracle. The orange anterior thoracic spriracle can be seen in the lower image vicina about half way up from the base of the front leg. Incidentally it is not a good idea to label images with species names, not easy to edit, top image (with almost black spiracle) is Calliphora livida. |
|
|
|
| Zeegers |
Posted on 21-09-2007 14:20
|
|
Member Location: Posts: 18446 Joined: 21.07.04 |
that is, the top image in the link, not this top image. That''s vomitoria alright. Theo |
|
|
|
| Cor Zonneveld |
Posted on 21-09-2007 20:00
|
|
Member Location: Posts: 840 Joined: 14.10.06 |
Many thanks all, I learned a bit more! OK, vomitoria in Amstelveen, new addition to suburban wildlife... Thanks for your attention Cor Zonneveld |
|
|
|
| Jump to Forum: |
but don't see the image in the post.
