Thread subject: Diptera.info :: H. albitarsis?
#1
Last year in may over small dirty river inside Moscow I collected this fly.
My old friend helped me "to pin it" and told me that it is some Diptera.
Today cleaning my house I found that fly.
In my key the fact that Sc do not reach C is enoght to ID it as H. albitarsis (first teza). Also: 3 black lines on thorax, enlarged f3, normal t3.
Am I right?
#2
If you are thinking about
Hilara, I am afraid you are way off. R
4+5 is not forked so you should have ended up in
Rhamphomyia. It looks like
R. (Megacyttarus) crassirostris (male): eyes not contiguous in male and 'elaborate' genitalia.
#3
Thank you Paul.
I have to think what to do with this permanent error:
collected fly under water I do not regard obviosly non-Hilara venation.
Nikita
#4
I am not quite sure qhat you mean by 'collected fly under water' but
R. crassirostris can swarm very close to the water surface (or at least males hunt very close to it) and they are thus prone to get into the water when you sweep close to the surface. And there probably other other reasons that a specimen may get submerged...
#5
The fly looked to patrol water surface. It seemed that fly look rather for prey than female. Exactly as Hilaras do.
Unfortunely, even this observation isn't enought reason not to see that R4+5 not forked.
Nikita
#6
R. crassirostris behaves like
Hilara in this respect, that is true. I am not quite certain whether females also come to the water surface and that mate selection takes place there, too.