Diptera.info :: Identification queries :: Diptera (adults)
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 Lauxaniidae - Sapromyzosoma quadricincta
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| Walther Gritsch |
Posted on 16-07-2022 21:15
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 Member Location: Copenhagen Posts: 289 Joined: 31.01.09 |
Hello, Judging by external characters the fly in question should be Sapromyzosoma quadricincta, but the genitalia don't fit. At least I can't make them fit the drawing in Shatalkin. There's a kind of resemblance though ... It has a pair of black spots on T6 and three preapicals on t2 (one dorsal and two ventrals) and only one of the ocellar bristles is located inside the ocellar triangle, curiously enough. If it isn't quadricincta then what are the options? Caught in a light-trap, Denmark, May 2022. All the best, Walther Gritsch attached the following image:  [63.07Kb] Edited by Walther Gritsch on 22-07-2022 12:24 Walther |
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| Paul Beuk |
Posted on 22-07-2022 09:57
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 Super Administrator Location: Netherlands Posts: 19403 Joined: 11.05.04 |
Most species show considerable variation within the basic structure of their genitalia. This is quadricincta but the direction of the spines on the inner side of the left lobe may vary, the thickness of the inner side of the right lobe may vary and there is some variation in the relative legnths of the inner and outer side of the lobe.
Paul - - - - Paul Beuk on https://diptera.info |
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| Walther Gritsch |
Posted on 22-07-2022 12:23
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Member Location: Copenhagen Posts: 289 Joined: 31.01.09 |
Thanks, Paul! I didn't consider variation a possibility. Edited by Walther Gritsch on 22-07-2022 12:24 Walther |
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