Diptera.info :: Identification queries :: Diptera (adults)
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 Pneumia/Pericoma ?
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| Lagides |
Posted on 22-03-2026 10:48
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 Member Location: Lyon (France) Posts: 37 Joined: 16.12.20 |
Hello, I've found this 2 mm long Psychodidae in Lyon metropolis area, center-east of France, on March 12, 2026 in a building entrance. It does not look like the usual Clogmia albipunctata. With the margin setae black except on the apical side where they are white, the pattern of the wings, and the white segments on the legs, I was thinking to either genus Pneumia or Pericoma. What do you think? I've collected it so I can try to dissect in looking for aedeagus but I don't know what they looks like for these. Lagides attached the following image:  [295.06Kb] French naturalist specialized in spiders. Curiosity is a duty: the duty to know. |
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| weia |
Posted on 22-03-2026 11:17
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Member Location: Posts: 443 Joined: 10.07.11 |
It definitely is in tribus Pericomaini, where such white hairs at the end of the veins can be found in many Pericoma species, in Berdeniella and also in one Ulomyia species. The light body hairs point to Berdeniella, but the black hairs on the wings do not. I think it is in Pericoma, but then it becomes difficult. I do not know how many species in Lyon occur that do not live in my region (Netherlands and Belgium). Maybe, but not sure at all, Pericoma pseudexquisita is a good candidate.
'fieldguide' Psychodidae: https://www.at-a-lanta.nl/weia/Motmuggen.html |
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| Lagides |
Posted on 22-03-2026 15:13
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Member Location: Lyon (France) Posts: 37 Joined: 16.12.20 |
Thanks for your reply. Are there any criteria I could image (I have both a stereomicroscope and a microscope) that could confirm (or invalidate) your proposition ? French naturalist specialized in spiders. Curiosity is a duty: the duty to know. |
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| weia |
Posted on 22-03-2026 18:00
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Member Location: Posts: 443 Joined: 10.07.11 |
I never catch and dissect.
'fieldguide' Psychodidae: https://www.at-a-lanta.nl/weia/Motmuggen.html |
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| Lagides |
Posted on 22-03-2026 18:43
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Member Location: Lyon (France) Posts: 37 Joined: 16.12.20 |
On our national taxinomic repository, here is the species that occurs in mainland France : Pericoma alhambrana Vaillant, 1978 Pericoma barbarica Vaillant, 1955 Pericoma barremica Vaillant & Withers, 1993 Pericoma blandula Eaton, 1893 Pericoma calcifera Vaillant & Withers, 1993 Pericoma calcilega Feuerborn, 1923 Pericoma corsicana Vaillant, 1955 Pericoma diversa Tonnoir, 1919 Pericoma exquisita Eaton, 1893 Pericoma fallax Eaton, 1893 Pericoma formosa Nielsen, 1964 Pericoma limicola Vaillant, 1961 Pericoma modesta Tonnoir, 1922 Pericoma pannonica Szabó, 1960 Pericoma pseudoexquisita Tonnoir, 1940 Pericoma restonicana Vaillant, 1978 Pericoma rivularis Berden, 1954 Pericoma segregata Vaillant, 1978 Pericoma trifasciata (Meigen, 1818) Pericoma vestita Vaillant & Withers, 1993 Pericoma viperina Vaillant, 1961 Pericoma volpina Vaillant, 1978 Using the distribution seen on GBIF and literature, I think we can exclude for Lyon areas : - alhambrana, barbarica, barremica and corsicana I have found no information about : - calcifera, limicola, restonicana, vestita, viperina and volpina Moreover, fallax and formosa seem to be northerner species while segregata is maybe a southerner species ? Does this help? French naturalist specialized in spiders. Curiosity is a duty: the duty to know. |
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| weia |
Posted on 22-03-2026 18:46
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Member Location: Posts: 443 Joined: 10.07.11 |
Very many candidates! I only know a minority of those, so I cannot help.
'fieldguide' Psychodidae: https://www.at-a-lanta.nl/weia/Motmuggen.html |
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| Lagides |
Posted on 22-03-2026 19:18
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Member Location: Lyon (France) Posts: 37 Joined: 16.12.20 |
Well, in that case, let the scalpel do the talking! It's a male, and I have extracted the aedeagus, it's currently swimming in lactic acid. I have also found the description (with a drawing of the aedeagus) of pseudoexquisita. Can you tell me which species of those you know you exclude by habitus so that I don't have to check their aedeagus description ? French naturalist specialized in spiders. Curiosity is a duty: the duty to know. |
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| weia |
Posted on 22-03-2026 19:45
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Member Location: Posts: 443 Joined: 10.07.11 |
B;adula and trifasciata are very different. Fallax is a bit different I think, diversa and exquisita are close. Do you have Vaillant Die Fliegen der Palaearktischen Region?
'fieldguide' Psychodidae: https://www.at-a-lanta.nl/weia/Motmuggen.html |
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| Lagides |
Posted on 22-03-2026 20:06
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Member Location: Lyon (France) Posts: 37 Joined: 16.12.20 |
Thanks! I don"t have it, is it a key of the palearctic Psychodidae? French naturalist specialized in spiders. Curiosity is a duty: the duty to know. |
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