Thread subject: Diptera.info :: Big Tachinidae

Posted by Dmitry Gavryushin on 18-07-2006 05:00
#1

July 17, 2006.
Size 11mm.
Flew around me much like some Tabanus around a cow (caught 3 specimens).

Posted by Dmitry Gavryushin on 18-07-2006 05:01
#2

A lateral view.

Posted by Dmitry Gavryushin on 18-07-2006 05:01
#3

And the head.

Posted by ChrisR on 18-07-2006 13:21
#4

Looks like a male Eurithia sp. to me, which is good because the genitalia on this group are very large and distinctive. Can you hook-out and photo the genitalia and let us see those? :) If not, then it gets a bit more difficult and speculative. :(

Posted by shar on 18-07-2006 14:48
#5

That is a big fly indeed. And what an incredible pictures again. Maybe we can call this fly: the cactusfly :)

Posted by Dmitry Gavryushin on 19-07-2006 14:12
#6

Ohh, I thought that one would be easy... Well Chris, maybe I'm ready to deal with genitalia, but I need some basic instructions, first, how can I tell a male from a female?...

Posted by ChrisR on 19-07-2006 15:48
#7

Look at the tip of the abdomen from underneath - the males of Eurithia will have a large chitinized capsule and if you are careful, while it is still soft, you can lever out the surstylus so that it is more visible. It doesn't need a full genitalia preparation - just do enough so that you can see the shapes of the large bits.

Posted by Dmitry Gavryushin on 19-07-2006 22:47
#8

OK Chris I'll try

Posted by Dmitry Gavryushin on 22-07-2006 03:30
#9

Well Chris all of the three were males. Finally I managed to fix the position through a lot of picking with pins. So I hope this would help.

Posted by Dmitry Gavryushin on 22-07-2006 03:31
#10

And a view from above.

Posted by ChrisR on 22-07-2006 10:32
#11

Ohh, nice work :) I'd say you have a very nice specimen of Eurithia anthophila (male) ... probably the commonest Eurithia :)

Posted by Dmitry Gavryushin on 22-07-2006 12:44
#12

Thanks a lot Chris :)