pun_logo

The Society for the study of flies (Diptera)

Affiliated to the British Entomological and Natural History Society (BENHS)

You are not logged in.

#1 2018-09-09 11:44:49

Gateside
DF Members
Name: Nigel Gilligan
From: Cumbria
Registered: 2011-08-26
Posts: 998

Small black fly with a large lump on front coxa?

I admit that I am unable to place this fly in any group. I tried the key to families, but the fly's details are a bit nebulous when it's small, and the lighting is not great. So it's easy to go wrong at several stages.
I then tried to visually compare with a wide range of families in albums (though probably not wide enough), but failed to find any species that appeared to have a large lump on the front leg coxae. It is also notable for having bi-colored cylindrical antennae.

Size: - around 4 - 5 mm (roughly)

Can anyone place this in a family?
Thanks
Nigel G.


Uploaded Images

Offline

 

#2 2018-09-09 16:10:37

andrewsi25
DF Members
Name: Ian Andrews
From: Pocklington, East Yorkshire
Registered: 2008-07-11
Posts: 258

Re: Small black fly with a large lump on front coxa?

Tachinid Cinochira atra

Ian

Offline

 

#3 2018-09-09 18:40:00

Gateside
DF Members
Name: Nigel Gilligan
From: Cumbria
Registered: 2011-08-26
Posts: 998

Re: Small black fly with a large lump on front coxa?

Thanks very much for the ID, Ian.
I must admit I am a bit dumbfounded. It doesn't fit into my mental box of what a typical Tachinid looks like, although I admit it does appear quite bristly if one looks closely.

It may be of interest that the fly was moving about only a little, but was more active in waving one or other of its front legs. Very odd! I guess there had to be a purpose in it, but I have no idea. Perhaps it didn't like the hairs on the Pulmonaria leaf.

Nigel.

Offline

 

#4 2018-09-09 22:09:51

andrewsi25
DF Members
Name: Ian Andrews
From: Pocklington, East Yorkshire
Registered: 2008-07-11
Posts: 258

Re: Small black fly with a large lump on front coxa?

You are spot on, Nigel...it has no right to be a Tachinid with that wing venation and even an unimpressive subscutellum...but it is!

Ian

Offline

 

Board footer

Powered by PunBB
© Copyright 2002–2005 Rickard Andersson