Thread subject: Diptera.info :: Delia floralis? = Hydrotaea irritans

Posted by Anczoviczka on 26-10-2016 19:12
#1

Hi,

I found this fly on meadow, 500 masl, Czech R., 30. July Thanks for your help.

Edited by Anczoviczka on 17-02-2017 22:08

Posted by Anczoviczka on 26-10-2016 19:13
#2

Anczoviczka wrote:
Hi,

I found this fly on meadow, 500 masl, Czech R., 30. July Thanks for your help.

Posted by Anczoviczka on 26-10-2016 19:13
#3

Anczoviczka wrote:
Anczoviczka wrote:
Hi,

I found this fly on meadow, 500 masl, Czech R., 30. July Thanks for your help.

Posted by Stephane Lebrun on 26-10-2016 19:42
#4

This is a male Hydrotaea. Maybe Nikita can give a species name.

Posted by Anczoviczka on 26-10-2016 21:14
#5

Thank you Stephane. How to distinguish Hydrotaea?

Posted by Stephane Lebrun on 26-10-2016 21:49
#6

Males with modified fore legs (femora notched, with hooks/tubercles/ridges etc.) = Hydrotaea.

Posted by Anczoviczka on 26-10-2016 21:52
#7

I understand. Thank you.

Posted by Nikita Vikhrev on 27-10-2016 17:46
#8

Stephane, I can't see any possibility except for H. irritans: densely grey dusted body (thuogh well may be much less dusted as well); a pair of elongated prst ac just before suture; f2 with at least 1 ventral spine visible; f3 with strong av only in apical 1/3; f3 and t3 only slightly curved. End of July and on flowers also fit good.

Posted by Stephane Lebrun on 27-10-2016 18:36
#9

I silently came to the same conclusion, but I'm never very confident with this genus. Thank you Nikita.

Posted by Nikita Vikhrev on 27-10-2016 19:02
#10

I hope to publish the revision of Palaearctic Hydrotaea next year. But the matter moves forward very slowly, a difficult genus indeed. On the other hand which genus is easy? Achanthiptera, may be...

Posted by Anczoviczka on 04-11-2016 14:49
#11

Thank you both.