Posted by Marcello on 27-11-2012 10:52
#6
Hi John,
very thanks for the informations and all the time you spent to help me!
I didn't knew some things, for example the "fresh emerged male" and the keys for the identification.
Unfortunately, in Italy (at least all the people/site I know) we don't have so expert people, I mean around the web, maybe I'll send the subject to some lab out of Italy for the ID.
In the mean time, can you please tell me some books with the keys for Diptera?
Thanks for all!
Marcello
PS: I'll post the adult of the same subject (I think) :)
John Carr wrote:
Excluding obviously inapplicable genera, the first few couplets of the key to Orthocladiinae ask
Eyes hairy or bare? I looked at the larger pictures on Flickr and thought I saw hairs, but that branch of the key fails.
Wing hairy or bare? Looks quite hairy to me.
Now there are about 15 genera left.
Eye with no dorsal extension, wedge-shaped, or parallel sided? Looks wedge shaped in the larger size. So about 10 genera.
The photos aren't clear enough to show details like anal point present vs. absent. (The anal point is a fine extension of the tip of the last tergite.) The freshly emerged male has antenna hairs laid flat, obscuring the presence or absence of an apical seta on the antennae.
So some Orthocladiinae. It may be distinctive to an Italian expert.