Thread subject: Diptera.info :: Bibionidae 2
Posted by NakaRB on 09-02-2021 19:43
#1
Russia, Moscow region, 16.05.2020
Posted by Zeegers on 10-02-2021 07:41
#2
That is a female ..... good luck !
Theo
Posted by eklans on 10-02-2021 10:16
#3
And this could be the female B. varipes? Abdomen ventrally yellow, small spurs on tibia III, wings brownish...
Greetings, Eric
Posted by Zeegers on 10-02-2021 12:06
#4
?? Females varioes / joahnnis / lanigerus are virtually impossible to tell apart, look for the thread on this topic using “forum search”
Theo
Posted by eklans on 10-02-2021 12:55
#5
Yes, I've read a lot in the forum and a lot more in several keys and still I try to learn more of these interesting flies!
What do you think of Haarto's descriptions in his key female:
- Wing membrane grey, nearly hyaline: johannis
if brownish ->
- Dorsal and ventral side of abdomen dark: lanigerus
- Ventral side abdomen distinctly paler than dorsal side: varipes
Greetings, Eric
Posted by Zeegers on 10-02-2021 16:45
#6
As said ... good luck !
I am vey suspicious of so many female varipes, and so few males.
That said, it is a statistical argument not apllicable to individual cases. I stick to males and pinned females.
Theo