Diptera.info

Posted by tim worfolk on 23-05-2009 06:49

This was present when I photographed the previous Exorista sp. see http://www.dipter...d_id=21886
Is it the same sp. but the female (proclinate parafrontal bristles), or am I misinterpreting it and it's something else altogether?

Many thanks for your patience.

Tim

Edited by tim worfolk on 24-05-2009 21:52

Posted by ChrisR on 23-05-2009 09:09

My feeling is that it is too black&grey and not long enough in the abdomen - it is lacking the golden/yellow dusting on the head and the obvious white ruff of hairs that Exorista spp. have.

I am not as good at Theo at spotting the minute features in photos but it is very anonymous and black with bare eyes & strongly raise & crossed apical scutellars, which often means Lydella stabulans - but that's just an educated guess. ;)

Posted by Zeegers on 23-05-2009 09:21

Definitely not Exorista, since it has 4 post DC and discal setae on tergites, a combination not occuring in Exorista.

First impression is female Lydella (broad vertex, bare eyes, black scutellum, apical scutellar bristles might be erect, difficult to see)

Theo

Posted by tim worfolk on 23-05-2009 12:48

Many thanks Theo and Chris; I'll look out for it again and try for better photos.

Tim

Posted by Zeegers on 24-05-2009 16:06

Sorry for the title, but I never suggested stabulans....

I'm more thinking grisescens/thompsoni

Anyhow, if the genus isn't certain, there is no use in speculating at species level

Theo

Posted by ChrisR on 24-05-2009 21:50

I suggested stabulans because it is very common here; we don't have thompsoni in the UK; and the grisescens I have seen in collections are usually much greyer :)

Posted by tim worfolk on 24-05-2009 21:57

I've changed the thread title again, sorry if I jumped the gun. I realise it's asking a lot for a definite id. based on one not so good photo, so I do appreciate your help. As I said, I'll go back and try for more photos.

Tim

Posted by Zeegers on 25-05-2009 20:16

Well, I enjoy all your great pictures, and as long as you don't complain not getting a 100 % ID, it is all perfectly fine with me.

Theo

Posted by tim worfolk on 26-05-2009 07:04

Thanks Theo, I can only really contribute with my photos - I'm a complete amateur at identification, although I am learning much from this forum (even if it's only how little I know!)

As for not getting certain ID's, I'm always amazed at how good you guys are.

Thanks as ever

Tim