Diptera.info :: Family forums :: Syrphidae
Who is here? 1 guest(s)
 Brachypalpus laphriformis?
|
|
| Sundew |
Posted on 07-01-2019 15:15
|
 Member Location: Berlin and Baden-Württemberg, Germany Posts: 3911 Joined: 28.07.07 |
Hi, I am quite sure that these pictures from 1 June 2018 show a male Brachypalpus laphriformis. The hind tibia is not abruptly angled, and the eyes do meet, so B. valgus is improbable. The pictures were taken in a wood, rich in old trees and dead timber, in southwestern Brandenburg. The species would be new for our region. In our forum archive there are many threads on the two species, but only in one (https://diptera.i...d_id=78560) a very convincing difference was pointed out: the arista of B. laphriformis is dark and the arista of B. valgus is white or light-coloured. I checked this in lots of pictures, and it was constant and helpful, especially with females (https://diptera.i...d_id=66494) or if the male hind tibia was not well visible. So dear experts: why is this easily observable character not mentioned in the keys??? Thanks for any opinions, Sundew Sundew attached the following image:  [277.83Kb] Edited by Sundew on 07-01-2019 15:16 |
|
|
|
| treebeard |
Posted on 28-04-2020 11:55
|
|
Member Location: Slovakia Posts: 614 Joined: 13.08.13 |
I would agree, this difference in arista color is a good trait, I use it as well. |
|
|
|
| Jump to Forum: |
