Thread subject: Diptera.info :: Two Syrphidae (hope this time with images)
#1
Moscow region, end july
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#2
P.S. As far as I find, the second one looks much like Cheilosia pagana.
#3
I think the first one is
Melanostoma mellinum, a male. The second is something near
Chalcosyrphus (
nemorum?), or maybe
Xylota (
abiens?).
#4
Thank you Paul.
As for first one I suspected Melanostoma mellinum.
As for second one there isn't such genus in my book.
Paul, one question. I tried to order first 3 books from your bibliography list via my friend in US, he didn't find its. In which i-net european bookstore I can order its, please?
#7
Hello to all,
I had a look in my collection with Xylota abiens and Chalcosyrphus nemorum. I think, the picture shows X. abiens, because of the white parts of the tarsae, as the specimen of my collection. My C. nemorum specimen have black tarsae.
Greetings
Gisela Merkel-Wallner
Posted by
Zeegers on 01-08-2005 10:03
#9
Interesting, but are you sure it is not vice versa ?
The colourplate in Stubbs & Falk demonstrate yellow tarsi in nemorum and complete black tarsi in abiens.
Anyway, the short abdomen and the very small amount of yellow on the hind tibia suggest nemorum rather than abiens.
But then again, it is difficult to tell for the picture
Theo Zeegers
#10
Dear Theo Zeegers,
you may be right. I found some pictures of X. abiens with white tarsae on this site:
http://perso.wanadoo.fr/cyrille.dussaix/Xylota_abiens/X.abiens.htm
I think, I have to check my collection once again.
Gisela Merkel-Wallner
Posted by
Zeegers on 01-08-2005 20:54
#11
Dear Gisela,
The fotos on your website are, based on my criteria for Xylota on pictures, indeed not X. nemorum. The abdomen is too long and there seems to be too much yellow on the base of tibiae 3.
So, the identification of the specimens in your collection might be perfectly right. Maybe the colouration of the tarsi is just very variable.
Which would, however, be quite curious, since it is rather constant in the larger Xylota-species, like meigeniana en coeruleiventris.
But then again, I am not a real expert, maybe Menno (?) can help
Theo