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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.

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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.

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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 ?

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I never catch and dissect.

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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?

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Very many candidates! I only know a minority of those, so I cannot help.

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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 ?

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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?

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Thanks!
I don"t have it, is it a key of the palearctic Psychodidae?