Diptera.info :: Identification queries :: Diptera (adults)
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 Phoridae: Borophaga (Peromitra) incrassata?
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| Martin Cooper |
Posted on 10-09-2014 09:02
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Member Location: Ipswich, Suffolk Posts: 628 Joined: 01.05.12 |
Small black fly found on 26 Aug 2014 on bushes near a stream at Martlesham, East Suffolk, TM252473. I keyed this as Borophaga incrassata using the keys to British Phoridae in RES Vol 10.6 Scuttle Flies (RHL Disney, 1983). I would appreciate a second opinion on the ID. Is it possible to tell the sex of this specimen from the following photos? Best wishes, Martin Martin Cooper attached the following image:  [105.35Kb] |
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| Martin Cooper |
Posted on 10-09-2014 09:03
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Member Location: Ipswich, Suffolk Posts: 628 Joined: 01.05.12 |
Hind tibia
Martin Cooper attached the following image:  [71.98Kb] |
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| Martin Cooper |
Posted on 10-09-2014 09:03
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Member Location: Ipswich, Suffolk Posts: 628 Joined: 01.05.12 |
Side of thorax and head
Martin Cooper attached the following image:  [173.96Kb] Edited by Martin Cooper on 10-09-2014 09:04 |
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| Martin Cooper |
Posted on 10-09-2014 09:05
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Member Location: Ipswich, Suffolk Posts: 628 Joined: 01.05.12 |
Dorsal face of base of wing
Martin Cooper attached the following image:  [122.44Kb] |
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| Martin Cooper |
Posted on 10-09-2014 09:06
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Member Location: Ipswich, Suffolk Posts: 628 Joined: 01.05.12 |
face
Martin Cooper attached the following image:  [175.92Kb] |
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| Martin Cooper |
Posted on 10-09-2014 09:07
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Member Location: Ipswich, Suffolk Posts: 628 Joined: 01.05.12 |
Front tibia and end of abdomen
Martin Cooper attached the following image:  [129.06Kb] |
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| Martin Cooper |
Posted on 17-09-2014 08:34
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Member Location: Ipswich, Suffolk Posts: 628 Joined: 01.05.12 |
I would be very grateful for a second opinion on the identification of this small black fly found on 26 Aug 2014 on bushes near a stream at Martlesham, East Suffolk, TM252473. Face about 1mm across, wing about 3.5mm long. This was my reasoning... all the characteristics are visible on the photos, I think. Using RES Vol10.6 Scuttle Flies (RHL Disney, 1983) Key to Genera (p15) 1 With wings and halteres. 4 No transverse combs of stoutish hairs on dorsal face of hind tibia. 6 Vein 3 with at least 5 fine hairs along its dorsal face. 7 Tibia with one or more isolated bristles in upper two-thirds, as well as apical bristles. 8 Hind tibia with a dorsal, longitudinal palisade-like row of stoutish hairs in addition to isolated bristles and scattered hairs. Vein 3 unforked --> Borophaga (p 19) 1 Tip of vein 3 doesn't form a swollen distal portion. 4 Ocellar triangle expanded into an elevated protruberance, and anterior ocellus transversely elongated so that it is at least 3x broader than high. Hind tibia with a strong anterior bristle in upper half. Vein 3 unforked. 5 Elevated protruberance bearing ocelli broader (fig 23). Front tibia with at least 2 postero-dorsal bristles. In both sexes the cerci are broadly ovoid and covered in densely-crowded fine hairs --> incrassata Comments, please. Martin |
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| Tony Irwin |
Posted on 18-09-2014 11:24
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 Member Location: Norwich, England Posts: 7236 Joined: 19.11.04 |
OK for incrassata, I'd say. Genitalia photo not very clear, but on balance I'd say female
Tony ---------- Tony Irwin |
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| Martin Cooper |
Posted on 18-09-2014 20:56
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Member Location: Ipswich, Suffolk Posts: 628 Joined: 01.05.12 |
Thanks Tony. I know the NBN Gateway isn't very well regarded by some Dipterists, but I always check for previous records and was pleased to see that the only record for B incrassata in E Suffolk was in 1981 by none other than RHL Disney himself! Best wishes, Martin |
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