Diptera.info :: Identification queries :: Diptera (adults)
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 Unknown Ephydridae?
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| Gnats2meetu |
Posted on 03-03-2026 11:40
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 Member Location: York, U.K. Posts: 301 Joined: 06.07.09 |
Hi all, I have a Hydrellia? from Montserrat I believe. Can anyone confirm and or go any further? Thanks in advance! Eyes with short dense hairs, arista pectinate w/ rays above Gnats2meetu attached the following image:  [105.39Kb] Edited by Gnats2meetu on 03-03-2026 11:54 Bobby D Jorvík |
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| Gnats2meetu |
Posted on 03-03-2026 11:57
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Member Location: York, U.K. Posts: 301 Joined: 06.07.09 |
Dorsal view
Gnats2meetu attached the following image:  [88.37Kb] Edited by Gnats2meetu on 03-03-2026 11:58 Bobby D Jorvík |
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| Tony Irwin |
Posted on 03-03-2026 13:59
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 Member Location: Norwich, England Posts: 7342 Joined: 19.11.04 |
Not Hydrellia - more likely a Philygria. It would help to know which Montserrat - Spain or Caribbean?
Tony ---------- Tony Irwin |
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| Gnats2meetu |
Posted on 04-03-2026 09:37
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Member Location: York, U.K. Posts: 301 Joined: 06.07.09 |
Hi Tony! Nice to hear from you.  . Fly is from Montserrat, Caribbean. Interesting- what makes you think Philygria? Not Nostima because of the long dorsal rays?
Edited by Gnats2meetu on 04-03-2026 11:00 Bobby D Jorvík |
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| Tony Irwin |
Posted on 04-03-2026 12:23
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Member Location: Norwich, England Posts: 7342 Joined: 19.11.04 |
Thanks for clarifying where the fly is from - I didn't recognise it as a European species. As it's Central American, there may be other genera that occur there, which I don't know, but it has a Philygria feel to it. Wayne Mathis is very familiar with the Caribbean fauna, and is best placed to say which genus (and perhaps species) it is.
Tony ---------- Tony Irwin |
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| Gnats2meetu |
Posted on 04-03-2026 13:10
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Member Location: York, U.K. Posts: 301 Joined: 06.07.09 |
Thanks for the direction Tony- the fronto orbital bristles in couplet 41 of Man. Near. Diptera was throwing me- they were obvious so I moved to Hydrellinae.... I've re-keyed and it keys out to Nostima because of the long haired arista? Bobby D Jorvík |
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| nielsyese |
Posted on 04-03-2026 17:27
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 Member Location: Yerseke, NL Posts: 2374 Joined: 13.02.09 |
It is Nostima.
Best wishes, Niels-Jan Dek |
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| John Carr |
Posted on 04-03-2026 19:33
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 Super Administrator Location: Colorado, USA Posts: 10624 Joined: 22.10.10 |
Compare Nostima spilogaster Cresson. A revision of the New World species of the shore-fly subgenus Nostima Coquillett (Genus Philygria Stenhammar; Diptera: Ephydridae) |
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| Tony Irwin |
Posted on 05-03-2026 11:11
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Member Location: Norwich, England Posts: 7342 Joined: 19.11.04 |
OK, I agree, it does match some of the Neotropical Nostima such as spilogaster. (They look very different to the European Nostima picta.)
Tony ---------- Tony Irwin |
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| Gnats2meetu |
Posted on 05-03-2026 13:36
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Member Location: York, U.K. Posts: 301 Joined: 06.07.09 |
Thank you all! A striking species- Unfortunately I only have one specimen. John's link was very helpful- Crossveins r-m and dm-cu white, wing infumate, Scutellum not densely black microtomentose or not appearing velvety etc. N. spilogaster seems a very good fit! 
Bobby D Jorvík |
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