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 2018-09-28 13:17:55

Gateside
DF Members
Name: Nigel Gilligan
From: Cumbria
Registered: 2011-08-26
Posts: 1019

Scathophagidae species?

I'm afraid I'm not 100% sure this is a Scathophagidae. I normally avoid taking pictures of this family because the key is tricky when trying via photos, unless you get lucky. I took these pictures because I was struck by the small bright red head and orange legs!

I tried using the key, but quickly got doubtful that I could do this. However there are so many species, that trying for visual comparison seemed a waste of time too. However, it is pretty distinctive in appearance, so I am just seeing if anyone recognises it anyway. I have very many photos, but here is the only image I've cropped so far - no point doing more if it's going to be abortive.  (I'm pretty sure this is a female, because I've got pictures of this one being mated.)

If I am on the right lines, and can upload some more images from different angles.

Nigel G.


Uploaded Images

Offline

 

#2 2018-09-28 22:46:28

Geoff F
DF Members
Name: Geoff Foale
From: South Devon
Registered: 2014-05-12
Posts: 192

Re: Scathophagidae species?

I get the same fly and have the same identification problems.

Eventually I tentatively named mine as Scathophaga inquinata but without any real confidence.

Offline

 

#3 2018-09-29 07:45:05

Gateside
DF Members
Name: Nigel Gilligan
From: Cumbria
Registered: 2011-08-26
Posts: 1019

Re: Scathophagidae species?

I looked at that suggestion and don't think I'm convinced either.
I have been through the test key for Scathophagidae, looking at the species notes, and thought a few were possible, but then eliminated them. One possibility was Chaetosa punctipes but then the antennae are a bit too bulbous, not elongate, and not pointed enough at the apex.

As you can probably imagine, that method of trawling through possibilities does not lend itself to be repeated.

I give up!

Offline

 

#4 2018-09-29 10:42:51

Tony Irwin
DF Members
Name: Tony Irwin
From: Norwich
Registered: 2008-03-01
Posts: 762

Re: Scathophagidae species?

Nigel - if you have another, more lateral view, that may be helpful. I'm inclined to think this is inquinata, but it would be good to confirm this by a seeing whether the 7th abdominal segment is shining

Offline

 

#5 2018-09-29 16:21:17

Gateside
DF Members
Name: Nigel Gilligan
From: Cumbria
Registered: 2011-08-26
Posts: 1019

Re: Scathophagidae species?

I think I can comply with that request, Tony.
Here is one lateral image of a mating pair. The female looks to have an extensively shining abdomen, and certainly the apical part. The 2nd image is (I'm pretty sure, unless I got confused by the movements) the male from the 1st one. So that has an extensively shining lateral aspect to the abdomen too.

Promising?

Nigel.


Uploaded Images

Offline

 

#6 2018-09-29 17:08:15

Tony Irwin
DF Members
Name: Tony Irwin
From: Norwich
Registered: 2008-03-01
Posts: 762

Re: Scathophagidae species?

Difficult to say whether the female's pregenital segment is shining, but as the male has anterodorsals on the hind femur, that excludes S. suilla. Colour is wrong for lutaria, so we are left with inquinata.

Offline

 

#7 2018-09-29 18:09:30

Gateside
DF Members
Name: Nigel Gilligan
From: Cumbria
Registered: 2011-08-26
Posts: 1019

Re: Scathophagidae species?

Magic - a species! Thanks Tony. You must know your Scathophagidae.

Breeding in dung is confirmed. And habitat could be loosely described as "moor", though in that bit it's more like rough semi-improved grassland merging into wet heath.

Nigel.

Offline

 

#8 2018-09-29 20:11:10

Tony Irwin
DF Members
Name: Tony Irwin
From: Norwich
Registered: 2008-03-01
Posts: 762

Re: Scathophagidae species?

I don't know them that well, but Stuart Ball's key is worth downloading and printing - well illustrated with lots of information.
See http://www.dipteristsforum.org.uk/docum … y%20v4.pdf

Offline

 

#9 2018-09-30 09:18:42

Gateside
DF Members
Name: Nigel Gilligan
From: Cumbria
Registered: 2011-08-26
Posts: 1019

Re: Scathophagidae species?

There is also (and I didn't know about it, so maybe I'm not the only one) a useful web site by Stuart Ball on British Scathophagidae, at
http://scathophagidae.myspecies.info/

Offline

 

#10 2018-09-30 21:45:05

Geoff F
DF Members
Name: Geoff Foale
From: South Devon
Registered: 2014-05-12
Posts: 192

Re: Scathophagidae species?

I see those are newer (2014 keys) so I have downloaded the information to replace my older (2007) version. Thanks for the links.

Offline

 

Board footer

Powered by PunBB
© Copyright 2002–2005 Rickard Andersson