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Diptera.info :: Family forums :: Asilidae Forum
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Robber from Wiltshire. UK
SteveC
#1 Print Post
Posted on 24-01-2009 18:43
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Location: Wiltshire, England
Posts: 20
Joined: 15.07.04

I originally posted this as a general query but I'm assured it's Asilidae [and possibly Machismus rusticus as suggested from a different forum]. Taken on chalk downland in Wiltshire, UK. 29-06-05. Don't remember size but it's sat on the isolator of an electric fence pole if that helps with scale! Any suggestions gratefully received.
TIA.
Steve.
SteveC attached the following image:


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Edited by SteveC on 24-01-2009 19:17
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Danny Wolff
#2 Print Post
Posted on 24-01-2009 20:09
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Location: Germany
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Joined: 27.05.04

Hi,

this is a female Leptarthrus brevirostris.

Greetings, Danny Wolff
 
www.asilidae.de
SteveC
#3 Print Post
Posted on 25-01-2009 14:13
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Location: Wiltshire, England
Posts: 20
Joined: 15.07.04

Danny Wolff wrote:
Hi,

this is a female Leptarthrus brevirostris.

Greetings, Danny Wolff


Many thanks Danny.
All the features fit, except one, the abdomen on my specimen has grey 'blobs' on each tergite whereas the specimen in 'Stubbs & Drake' is all black. The description also states a black abdomen. Could mine be recently emerged and the grey is just an artefact of being a 'fresh' specimen?
Cheers,
Steve.
Edit: just looked at some pics in Malcolm Storeys excellent Bioimages website and it is clear that these grey markings are only visible in lateral views - from a dorsal position the abdomen appears entirely black; mystery solved and thanks again DannySmile
Edited by SteveC on 25-01-2009 17:25
This mail is a natural product. The
slight variation in spelling and
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Danny Wolff
#4 Print Post
Posted on 26-01-2009 17:37
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Location: Germany
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Hi,

white/grey markings on abdomen occur in females only.

Greetings, Danny Wolff
 
www.asilidae.de
SteveC
#5 Print Post
Posted on 26-01-2009 20:23
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Location: Wiltshire, England
Posts: 20
Joined: 15.07.04

OK, thanks for that.
Cheers,
Steve.
This mail is a natural product. The
slight variation in spelling and
grammar enhance its individual
character and beauty and in no
way are to be considered flaws
or defects.
 
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