Diptera.info :: Identification queries :: Diptera (adults)
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 Fly behaviour
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| Gordon Jar |
Posted on 08-09-2006 17:49
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Member Location: East Sussex, England Posts: 209 Joined: 09.10.05 |
I photographed the attached in South East England on 08/09/06. The photographs were taken in the order they are numbered. I wondered what it's intentions were. Can anyone advise me and also Id it ? Thankyou Regards Gordon Gordon Jar attached the following image:  [55.28Kb] |
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| Gordon Jar |
Posted on 08-09-2006 17:52
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Member Location: East Sussex, England Posts: 209 Joined: 09.10.05 |
Apologies for putting this in the wrong forum. Is it possible to move It ? Gordon |
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| Tony Irwin |
Posted on 08-09-2006 19:08
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 Member Location: Norwich, England Posts: 7280 Joined: 19.11.04 |
Ah! What mysteries lie inside a fly's head! Circumstantial evidence suggests that this is Delia radicum male (Anthomyiidae) and the sawfly larva is Athalia rosae (Tenthredinidae). Possibly (and this is stretching my imagination) the sawfly larva smells something like a female cabbage root fly (which has been eating Brassica too, albeit as a maggot). Confused, it prepares to mount, but realises its error before any lasting embarrassment! 
Edited by Tony Irwin on 08-09-2006 19:08 Tony ---------- Tony Irwin |
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| Gordon Jar |
Posted on 08-09-2006 21:05
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Member Location: East Sussex, England Posts: 209 Joined: 09.10.05 |
Thankyou Tony. No wonder the caterpillar is backing off. Regards Gordon |
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