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 Eristalinus sepulchralis?
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| johnes81 |
Posted on 28-09-2017 12:27
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 Member Location: Berlin, Germany Posts: 1980 Joined: 15.10.16 |
Berlin - August - female I have trouble understanding how to separate Eristalinus sepulchralis from Eristalinus aeneus because I think that the abdomen is not 'completely' shiny in aeneus. I see alot of photos identified as aeneus but it looks to be matte black too. The eyes are supposed to be hairy all over for Eristalinus sepulchralis but I do not see but a few hairs at the very bottom of the eyes on my specimen. In this case, genitalia is better for me so I've dissected the ovipositor. Thus, am I correct with Eristalinus sepulchralis? Maybe someone can also help with a second question: what is a difference of the ovipositor of Eristalinus aeneus? Noone draws genitalia for some reason. Thank You for your Time and Effort. johnes81 attached the following image:  [141.23Kb] John and Nini. Naturalists not experts. |
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| johnes81 |
Posted on 28-09-2017 12:28
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Member Location: Berlin, Germany Posts: 1980 Joined: 15.10.16 |
eyes hairy
johnes81 attached the following image:  [206.86Kb] John and Nini. Naturalists not experts. |
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| johnes81 |
Posted on 28-09-2017 12:28
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Member Location: Berlin, Germany Posts: 1980 Joined: 15.10.16 |
ovipositor - dorsal and ventral views
johnes81 attached the following image:  [74.22Kb] Edited by johnes81 on 28-09-2017 12:29 John and Nini. Naturalists not experts. |
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| Gerard Pennards |
Posted on 28-09-2017 13:29
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 Member Location: Amersfoort Posts: 1914 Joined: 07.06.04 |
If you have a male it's very easy. In aeneus male the eyes touch, in sepulchralis males the eyes are slightly separated. The hairy eyes feature goes for the females.....
Greetings, Gerard Pennards |
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| johnes81 |
Posted on 28-09-2017 20:00
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Member Location: Berlin, Germany Posts: 1980 Joined: 15.10.16 |
Thank You for the explanation Gerard. I have yet to find a male. I always find the females for some reason. Based upon the hairy eyes, then I guess this is E. sepulchralis. I wonder when I will find E. aeneus. I suppose that I have to look in new places next spring/summer. I am trying to learn more about Syrphidae. I am surprised that more people do not study them. I like Syrphidae. Thank You and I wish for you to have a Wonderful Day. Edited by johnes81 on 28-09-2017 20:01 John and Nini. Naturalists not experts. |
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