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Platystoma (not seminationis)?
Carnifex	#1 Posted on 14-12-2023 14:45
Member Location: Vienna, Austria Posts: 1863 Joined: 23.06.15	First, apologies for the quality. Last year in May at the city borders of Vienna, I noticed an area where probably hundreds of Platystoma were sunbathing on poles and tree trunks - in numbers I have never experienced before. So I made wide-angle shots to show the number, without any close up photos and thus, the photos are heavily cropped. I am still posting them here because I am now suspecting these not to be the common Platystoma seminationis (the only species currently known for the state), but another species. I think I can see reddish tarsi in some individuals and also the humeral calli seem to be light colored, so my suspicion would be P. lugubris, which seems also to be the most likely option when looking at the distribution. But I don't necessarily want a species ID here, just a statement whether you agree that the general looks favors a different species. Thanks a lot Cheers, Lorin Font Color All requests are from the urban area of Vienna, if not otherwise stated. My Diptera observations (and other living forms) can be found here, and corrections or comments over there would also be appreciated.


libor	#2 Posted on 14-12-2023 19:27
Member Location: western Bohemia Posts: 1267 Joined: 30.05.09	P. lugubre has pinkish coloured humeral calli, all other species have humeral calli black. I cannot see it on your photos, so, which colour do you see? Libor


Carnifex	#3 Posted on 15-12-2023 23:16
Member Location: Vienna, Austria Posts: 1863 Joined: 23.06.15	they look bright yellow or whitish to me Cheers, Lorin Font Color All requests are from the urban area of Vienna, if not otherwise stated. My Diptera observations (and other living forms) can be found here, and corrections or comments over there would also be appreciated.