Diptera.info :: Family forums :: Asilidae Forum
 Three Asilids
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| Juergen Peters |
Posted on 29-07-2006 22:20
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 Member Location: northwest Germany Posts: 14248 Joined: 11.09.04 |
Hello! I found these robber flies today here in Ostwestfalen/Germany at a forest edge. The couple should be Choerades. Is it possible to determine the species? #2 was about 12 mm long, #3 somewhat bigger. I have no real idea about these. Any hints appreciated. Thanks!   Larger pictures (~ 250 KB each): http://insektenin...s_sp_3.jpg http://insektenin...s_sp_4.jpg #2:  #3: 
Best regards, Jürgen -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= Juergen Peters Borgholzhausen, Germany WWW: http://insektenfo... -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= |
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| Tony Irwin |
Posted on 03-08-2006 16:08
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 Member Location: Norwich, England Posts: 7302 Joined: 19.11.04 |
Hi Juergen The couple are a happy pair of Choerades femorata, easily confused with marginata, but distinguished with a long first antennal segment (more than 3 times as long as the second). I think numbers 2 and 3 are both Machimus, and I would suggest atricapillus. Number 3 is displayng the typical asymmetric pose which this species adopts in sunlight, positioning one side of the body to obtain maximum heat (for efficient flight) while reducing the visible shadow, so making it less visible to avain predators. Edited by Tony Irwin on 03-08-2006 16:09 Tony ---------- Tony Irwin |
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| Juergen Peters |
Posted on 05-08-2006 20:54
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Member Location: northwest Germany Posts: 14248 Joined: 11.09.04 |
Hello, Tony! Thank you very much for your explanations! Best regards, Jürgen -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= Juergen Peters Borgholzhausen, Germany WWW: http://insektenfo... -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= |
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