Thread subject: Diptera.info :: Sciaridae, Zygoneura

Posted by Dmitry Gavryushin on 14-10-2008 13:57
#1

28 September 2008, Naro-Fominsk, Moscow region, Russia. I repeatedly come to Catocha latipes but it's obviously not the case, at least wing looks quite different in Yukawa (1971), so I took a wrong turn somewhere...

Subject changed from Cecidomyiidae, Lestremiinae to Sciaridae, Zygoneura.

Edited by Dmitry Gavryushin on 14-10-2008 18:12

Posted by Dmitry Gavryushin on 14-10-2008 13:58
#2

Male genitalia.

Posted by xylo on 14-10-2008 16:22
#3

Hi Black,

no doubt: this is a species of Zygoneura (Diptera: Sciaridae). Their antennae resembling that of gall midges and their apical spurs of tibiae are very short, but have a closer look on the wing veins and complexity of genital....

cheers,
xylo

Posted by Dmitry Gavryushin on 14-10-2008 18:10
#4

Many thanks xylo - so it's a Sciaridae...

Posted by Paul Beuk on 14-10-2008 18:11
#5

Most characteristic for Zygoneura: bell-shaped fork in vein M. You can even see it in the top picture.

Posted by Dmitry Gavryushin on 14-10-2008 18:13
#6

Thanks again Paul.

Posted by phil withers on 14-10-2008 22:22
#7

Looking at the genitalia preparations, it is clear that the first is Zygoneura sciarina. The second, however, is not a Zygoneura: it looks much more like a Xylosciara. Check the venation character mentioned above.

Posted by Dmitry Gavryushin on 16-10-2008 07:22
#8

Well Phil I thought it's the same specimen - will check later.

Posted by xylo on 16-10-2008 10:37
#9

Well, a detailed view of ventral inner margin of gonocoxites (base and apical end) would be interesting: there should be a group of more prominent setae. The excavation of apical fourth/third of stylus supports Zygoneura. And there are some more species described by Mamaev and Mohrig exclusively from Russia.....
Let's wait what Black will report (Hopefully it is on one slide/in one vial)....

so long,
xylo