Diptera.info :: Identification queries :: Diptera (adults)
Who is here? 1 guest(s)
 Dolichopus brevipennis?
|
|
| hpluymaekers |
Posted on 09-08-2016 16:47
|
|
Member Location: Posts: 2 Joined: 14.04.14 |
Fly is seen in the Southern part of The Netherlands, 16 June. According to the key of Grichanov (2006) and that of d'Assis Fonseca (1978), it is Dolichopus brevipennis. Except for one thing: the hind coxa has on the outer face a vertical row of four bristles. So, what went wrong? Hind femur with one preapical bristle. Hind metatarsus with one dorsal bristle. Apical segment of front tarsus is strongly enlarged. Unfortunately, the right middle leg has broken off. Harry Pluymaekers hpluymaekers attached the following image:  [186.29Kb] |
|
|
|
| Igor Grichanov |
Posted on 10-08-2016 09:40
|
 Member Location: St.Petersburg, Russia Posts: 1688 Joined: 17.08.06 |
Why not Dolichopus brevipennis? The hind coxa has only one strong bristle.
Igor Grichanov |
 |
|
| hpluymaekers |
Posted on 10-08-2016 12:51
|
|
Member Location: Posts: 2 Joined: 14.04.14 |
There is indeed one strong bristle, but in addition there are in a vertical row 3 more bristles, becoming progressively smaller. I got confused by the key of Grichanov (your key, I presume), which says in couplet 29: a) hind coxa with vertcal row of fine setae (leads to Argyra), or b) hind coxa with one seta (leads among others to Dolichopus). In the key to the genera of d'Assis Fonseca I read the same (couplet 29). So, I thought that all the species of Dolichopus had only one bristle on the hind coxa. From your answer, I conclude that I can ignore the smaller ones. Thank you. Edited by hpluymaekers on 10-08-2016 12:52 |
|
|
|
| Jump to Forum: |
but don't see the image in the post.
