Diptera.info :: Identification queries :: Diptera (adults)
 Anthomyiidae? ID?
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| tim worfolk |
Posted on 20-07-2009 16:49
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 Member Location: Devon, England Posts: 737 Joined: 05.05.09 |
If it's Anthomyiidae, then I suspect identification may be impossible - but what the hell, you never know.... 20/7/2009; Devon, England. Thanks Tim tim worfolk attached the following image:  [85.32Kb] Edited by tim worfolk on 21-07-2009 06:46 |
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| tim worfolk |
Posted on 20-07-2009 16:49
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Member Location: Devon, England Posts: 737 Joined: 05.05.09 |
a different view
tim worfolk attached the following image:  [79.12Kb] |
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| tim worfolk |
Posted on 20-07-2009 16:50
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Member Location: Devon, England Posts: 737 Joined: 05.05.09 |
and finally...
tim worfolk attached the following image:  [90.16Kb] |
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| KWQ |
Posted on 20-07-2009 18:19
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Member Location: Turku, Finland Posts: 208 Joined: 10.12.04 |
Actually you DO know the miserable truth in these female Anthomyiids, most of them are not to be determined even after laborious hours under the lens of a microscope...let alone in photos... |
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| tim worfolk |
Posted on 20-07-2009 18:23
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Member Location: Devon, England Posts: 737 Joined: 05.05.09 |
So it is at least an Anthomyiid! Thanks KWQ. Tim |
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| Michael Ackland |
Posted on 21-07-2009 09:40
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Member Location: Dorset UK Posts: 680 Joined: 23.02.08 |
It is probably a female Delia species. The rather long anterodorsal seta on mid tibia, long prealar seta, slight median presutural stripe on scutum, weak median stripe on abdomen suggest Delia penicillosa Hennig, though it could be criniventris Zett though the tibia are rather dark, not pale. Was it photographed on a coastal dune, and what is the size of the fly? I have always found peniciillosa by sweeping grass on sand dunes. The male is easily identified by long setae on sternites projecting laterally. |
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| KWQ |
Posted on 21-07-2009 10:20
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Member Location: Turku, Finland Posts: 208 Joined: 10.12.04 |
Impressive! D. penicillosa male is really a characteristic fly (caught at least in Turku region also from Finland, just from quite ordinary meadows). But I never dreamt that in this difficult genus also females could be determined and even from pictures! |
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| tim worfolk |
Posted on 21-07-2009 11:16
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Member Location: Devon, England Posts: 737 Joined: 05.05.09 |
Thanks for your help Michael. No not on dunes, nearest would be about five miles away! The site is farmland - old mature hedge/rough pasture with brackish marsh/fen about 100m away. I suspect this will only complicate things - just when I thought I might get a name for one of these. Tim |
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| Michael Ackland |
Posted on 21-07-2009 12:44
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Member Location: Dorset UK Posts: 680 Joined: 23.02.08 |
I find (on searching the literature) that D. penicillosa is recorded from Europe from inland and varied habitats. It's just that I have always caught it on dunes in England. It's obviously not impossible the species occurs in inland grasslands. Whilst I would not offer a definte det for a female of Delia from a photo, this is a probable identification. Delia females require a careful comparison of pinned specimens under the microscope with known females, I.e pairs caught in cop, or material of both sexes caught in the same locality. The host plant is not known. |
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