Thread subject: Diptera.info :: Staphylinidae - Ontholestes sp?
Posted by tim worfolk on 13-05-2009 15:44
#1
First I'd like to apologise for the setting/background (don't ask). I'm fairly sure this is an
Ontholestes sp. but I don't know which. I believe there are only 2 species in Britain;
O.murinus and
O.tessellatus. Is it possible to say which, please?
BTW I was actually trying to photograph flies when this appeared.
many thanks
Tim
Posted by John Bratton on 14-05-2009 16:41
#2
I think yours is murinus, based on the colour of the antennae.
Posted by tim worfolk on 14-05-2009 17:07
#3
Thanks John, is that the best way to separate the two species?
Tim
Posted by John Bratton on 18-05-2009 13:20
#4
Its not the best way, it was the only one I could remember at the time.
O. tessellatus: palpi and legs red except part of the femora black. Antennae red at the base, black in the distal half, about 50/50.
O. murinus: palpi and legs black except part of the tarsi red. Antennae mostly red, just the tip black.
There are also differences in colour of the coxae but I can't remember which way round; and in shape of the pronotum but you need specimens of both to appreciate it.
John Bratton
Posted by tim worfolk on 18-05-2009 20:43
#5
Thanks again John, it's great to be able to put a definite name to it. Now I need to try to get some better photographs.
Tim