Diptera.info :: Family forums :: Syrphidae
 Xanthogramma dives (cf.)
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| Karol Ox |
Posted on 02-03-2015 14:02
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 Member Location: Slovakia Posts: 1338 Joined: 25.01.11 |
Hello. Xanthogramma pedissequum is correct? 2.8.2014, Slovakia, 200 m. Thank you. Regards Karol Karol Ox attached the following image:  [151.97Kb] Edited by Karol Ox on 12-03-2015 11:14 |
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| Raphael Weniger |
Posted on 11-03-2015 21:16
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Member Location: Posts: 9 Joined: 07.03.15 |
Hey Karol ox, its not X. pedissequum, this species would have a distinct grey/black band between each tergit and sternit. The specimen in your picture just have black stripes between the 1st and 2nd Tergit and sternit So it is X. dives or X. stackelbergi which are difficult to separate. I leaning to X. dives because of the triangular shaped yellow spot on tergit 2, with a more pointed inner corner, in X. stackelbergi it should be more rounded. a very descriptive key is provided by Speight and Sommaggio (but it is a provisional one!) "On the presence in Switzerland of Microdon myrmicae Schönrogge et al., 2002, Xanthogramma dives (Rondani,1857) and X. stackelbergi Violovitsh, 1975" 2010 in Entomo Helvetica hubert Edited by Raphael Weniger on 11-03-2015 21:17 |
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| Karol Ox |
Posted on 12-03-2015 11:13
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Member Location: Slovakia Posts: 1338 Joined: 25.01.11 |
hubert von der Weide wrote: Hey Karol ox, its not X. pedissequum, this species would have a distinct grey/black band between each tergit and sternit. The specimen in your picture just have black stripes between the 1st and 2nd Tergit and sternit So it is X. dives or X. stackelbergi which are difficult to separate. I leaning to X. dives because of the triangular shaped yellow spot on tergit 2, with a more pointed inner corner, in X. stackelbergi it should be more rounded. a very descriptive key is provided by Speight and Sommaggio (but it is a provisional one!) "On the presence in Switzerland of Microdon myrmicae Schönrogge et al., 2002, Xanthogramma dives (Rondani,1857) and X. stackelbergi Violovitsh, 1975" 2010 in Entomo Helvetica hubert Hello Hubert. Thank you for the information. Karol |
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