Thread subject: Diptera.info :: Heleomyzidae (young female)

Posted by lagura on 06-02-2009 20:32
#1

Could be a Heleomyzidae for all I know. Can it be identified from these photos?
What's that orange thing it's got on the frons (I believe that's what that area is called :))

Size: ~7mm
Date: 1 December 2008
Location: Wooden railing around a pond (Helsingborg, Sweden)

Thank You!

Edited by lagura on 07-02-2009 02:00

Posted by lagura on 06-02-2009 20:33
#2

Dorsal view

Posted by lagura on 06-02-2009 20:34
#3

Lateral view. Quite an acrobatic fly :)

Posted by Andrzej on 06-02-2009 21:06
#4

Young adult !. Really a heleomyzid fly. It's female and difficult to ID :(
Andrzej

Posted by andrzej grzywacz on 06-02-2009 23:58
#5

If I think correct the orange thing on head is the ptilinum (inflation of this membrane help to emerge puparium by fly, after some time this membrane is withdrawn by right muscle). It is very important character of flies (about 80 families) classified into Schizophora group.

Posted by lagura on 07-02-2009 02:04
#6

Thanks Andrzej and Andrzej!
Interesting to know about the orange thing. It's the first time I've seen it.