Diptera.info :: Identification queries :: Diptera (adults)
 Parydra cf quadripunctata
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| Jogvan F |
Posted on 07-11-2025 23:46
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Member Location: Faroe Islands Posts: 119 Joined: 03.10.24 |
This specimen and two others (total 2 males and a female) were collected in grass near a lake in Faroe Islands 15. august 2025. If not for the apical process on scutellum it keys out to Parydra quadripunctata using Stuke, 2025. It does have the obvious seta on middle coxa. Knees are not yellow. P. coarctata, P. fossarum and P. pusilla are reported from here. Also a dubious record of P. quadripunctata. Records for P. quadripunctata and P. coarctata are from 1881- 1915. Any help is appreciated Jógvan F Jogvan F attached the following image:  [300.21Kb] |
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| Jogvan F |
Posted on 07-11-2025 23:46
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Member Location: Faroe Islands Posts: 119 Joined: 03.10.24 |
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Jogvan F attached the following image:  [227.91Kb] |
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| Jogvan F |
Posted on 07-11-2025 23:47
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Member Location: Faroe Islands Posts: 119 Joined: 03.10.24 |
head
Jogvan F attached the following image:  [114.23Kb] |
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| Jogvan F |
Posted on 07-11-2025 23:47
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Member Location: Faroe Islands Posts: 119 Joined: 03.10.24 |
Scutellum
Jogvan F attached the following image:  [112.53Kb] |
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| Jogvan F |
Posted on 07-11-2025 23:47
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Member Location: Faroe Islands Posts: 119 Joined: 03.10.24 |
Wing
Jogvan F attached the following image:  [204.9Kb] |
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| Jogvan F |
Posted on 07-11-2025 23:48
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Member Location: Faroe Islands Posts: 119 Joined: 03.10.24 |
Middle coxa with seta
Jogvan F attached the following image:  [85.78Kb] |
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| Tony Irwin |
Posted on 08-11-2025 20:48
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 Member Location: Norwich, England Posts: 7317 Joined: 19.11.04 |
P. coarctata does have bristles on the outer face of the mid coxa, but these are usually pale and finer than the dark bristle seen in other related species. It's difficult to judge from your photo, but I would say this could be coarctata. On the other hand, some quadripunctata do have a small apical tubercle on the scutellum. If you want to be sure, take off the male genitalia, soak in KOH, and examine the internal characters.
Tony ---------- Tony Irwin |
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