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Sciomyzidae? => Psacadina sp.
RamiP	#1 Posted on 03-01-2022 19:03
Member Location: Posts: 5739 Joined: 25.04.15	29.5.20 in Jyväskylä, Finland Edited by RamiP on 13-01-2022 10:51


Paul Beuk	#2 Posted on 10-01-2022 09:36
Super Administrator Location: Netherlands Posts: 19363 Joined: 11.05.04	Could be Psacadina verbekei Paul - - - - Paul Beuk on https://diptera.info


RamiP	#3 Posted on 10-01-2022 10:24
Member Location: Posts: 5739 Joined: 25.04.15	Thanks Paul If it is verbekei, it is new for Finland. What about P. zernyi, it is pretty common here? Raimo


Paul Beuk	#4 Posted on 11-01-2022 16:42
Super Administrator Location: Netherlands Posts: 19363 Joined: 11.05.04	I based my ID of verbekei on the Fauna Ent. Scand. key by Rozkosny (1984), that mentions a more strongly curved posterior crossvein for zernyi and less strongly curved for verbekei. The accompanying figures are quite clear. However, looking at the wing figures for the same two species in Rozkosny's Palaearctic key (1987), they seem to be reversed. The kley does nt mention the crossvein, neither is the crossvein mentioned in some of the later keys I have seen. The characters mentioned in those keys are not visible in this picture. So, that leaves us with Psacadina sp. Paul - - - - Paul Beuk on https://diptera.info


RamiP	#5 Posted on 13-01-2022 10:50
Member Location: Posts: 5739 Joined: 25.04.15	Thanks Paul for your answer Raimo


jonas	#6 Posted on 13-01-2022 17:33
Member Location: Posts: 351 Joined: 06.05.07	Hello Rozkosny (1984)'s character of wing venation is unreliable if you look at a broad geographicall scope; for identification you should definitely check Kassebeer (2002) :-) Based on the pictures it is definitely Psacadina, but not possible to identify to species. The general impression of color indicates P. zernyi though. Again, without better pictures not possible to ID a species here, so definitely a guess based on experience. And last: Psacadina verbekei has not been found in Finland yet, but i am most certain it does occur! Psacadina zernyi is common in Finland (well - I've seen a lot of material in collections from Finland) Finally, some promo for a recent paper of mine https://www.researchgate.net/publication/348133411_Review_of_Psacadina_Enderlein_Diptera_Sciomyzidae_with_the_description_of_a_new_species_from_Southwest_Europe It involves a nice map, to see where you might expect P. verbekei wishes