Thread subject: Diptera.info :: Empidae-Which one?<Bicellaria sp.
Posted by Roger Thomason on 16-09-2008 15:21
#1
Looks like some kind of Empid. Photo taken some time ago, so can't remember the size, but looks pretty small. <4-6mm? Only have the one pic.
Edited by Roger Thomason on 17-09-2008 17:02
Posted by Nikita Vikhrev on 16-09-2008 16:44
#2
Hybotidae, Hybos, I think
Posted by Kahis on 16-09-2008 16:59
#3
Definitely Hybotidae.
Bicellaria?
Posted by Roger Thomason on 16-09-2008 17:13
#4
Thanks for the ID's guys. My checklist has Hybos femoratus on it, or Bicellaria sulcata if it's one of those? Who can tell? :|.
Regard Roger
Just looked in the Gallery and that rules out H.femoratus
Edited by Roger Thomason on 16-09-2008 17:22
Posted by igor on 16-09-2008 18:16
#5
Bicellaria
Posted by Adrian on 17-09-2008 08:26
#6
Did you take this photo in the Shetlands? Interestingly, the recording Scheme doesn't have any records of Bicellaria from Shetland although a few have been found in Orkney and 2-3 spp are likely in Shetland. It looks like B vana to me, although the thorax is perhaps rather too shining If you have the spec and send it to me I can det it for you
cheers
Adrian
Posted by Roger Thomason on 17-09-2008 09:38
#7
Photo taken in my garden in Mossbank, Shetland on 27/07/08 @08.27,(a bit early for a Sunday,looking up the calendar)
My checklist has Bicellaria sulcata on it. List is available over the web on http://www.nature-shetland.co.uk/entomology/diptera.htm
I do not take specimens.
Regards Roger
Posted by Adrian on 17-09-2008 14:57
#8
Thanks Roger:- I'll check out the link
Re B sulcata:- while you may well be correct in determining R sulcata from Shetland I'd be intersted to hear how you determined it without taking the specimen. Despite Chvala and Collins keys giving apparently clear distinctions between sulcata and vana they are actually very difficult to separate other than by male genitalia. I have checked scores of specimens in different collections which were placed under sulcata but which turned out to be the fantastically common B. vana when dissected. Determining collected specimens of Bicellaria can be difficult enough but field identification would require almost supernatural skills, certainly far in advance of my own paltry efforts.
I really do urge you to think about collecting critical species for identification
Hope this help
best wishes
Adrian
Posted by Roger Thomason on 17-09-2008 16:50
#9
Hi Adrian
I never did determine that it was B.sulcata, I merely stated that it was on my checklist. I'll put it down as Bicellaria sp. to keep you happy :D
Regards Roger
Posted by Adrian on 18-09-2008 08:32
#10
Hi Roger
Many thanks:- my mistake.
I see that the records on your checklist are mostly attributed to Brian Laurence. I had some data for the recording scheme from him some years back but obviously need to contact him again for an update.
Incidentally:- a nice site, keep up the good work
cheers
Adrian
Posted by Roger Thomason on 18-09-2008 09:30
#11
Hi Adrian
I need to get an updated list too, as a lot of the stuff I'm finding isn't on the list. I have nothing to do with the site other than posting off photo's, most of which never see the light of day :(.
Regards Roger