Diptera.info :: Identification queries :: Diptera (adults)
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 Chaoboridae, Mochlonyx ???
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| Jozef Obona |
Posted on 29-09-2015 12:44
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 Member Location: Slovakia Posts: 336 Joined: 07.12.10 |
Hi all, please can it be Mochlonyx fuliginosus ? Thx for help  Jozef Jozef Obona attached the following image:  [61.43Kb] |
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| Jozef Obona |
Posted on 29-09-2015 12:44
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Member Location: Slovakia Posts: 336 Joined: 07.12.10 |
wing
Jozef Obona attached the following image:  [74.35Kb] |
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| Jozef Obona |
Posted on 29-09-2015 12:45
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Member Location: Slovakia Posts: 336 Joined: 07.12.10 |
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Edited by Jozef Obona on 29-09-2015 12:49 |
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| John Carr |
Posted on 29-09-2015 13:14
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 Member Location: Massachusetts, USA Posts: 9896 Joined: 22.10.10 |
In the key to American Chaoboridae: First tarsomere shorter than second. Halter with numerous setae on stem and knob. Gonostylus with spiniform seta at apex. ... Mochlonyx First tarsomere longer than second. Halter with two groups of two to five setae on knob. Gonostylus without apical spiniform seta at apex. ... Chaoborus |
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| Jozef Obona |
Posted on 30-09-2015 06:41
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Member Location: Slovakia Posts: 336 Joined: 07.12.10 |
Thanks for info John I thing it is Mochlonyx
Jozef Obona attached the following image:  [11.14Kb] |
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| Jozef Obona |
Posted on 30-09-2015 06:42
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Member Location: Slovakia Posts: 336 Joined: 07.12.10 |
and if I used : Saether O.A. 1997b: Diptera Chaoboridae, phantom midges, In Nilsson A. (ed.): Aquatic Insects of North Europe. Vol. 2. Apollo Books, Stenstrup, pp. 149-161. probably M. fuliginosus ? Jozef Obona attached the following image:  [53.94Kb] |
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| Tony Irwin |
Posted on 30-09-2015 09:10
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 Member Location: Norwich, England Posts: 7194 Joined: 19.11.04 |
The photo of the leg shows tarsomeres 5, 4, 3 and part of 2. Looking at your first image, I'd say the first tarsomere (next to the tibia) was longer than the second, so this should be Chaoborus. The safest way to identify it is to look at the shape of the penis valve (situated internally at the base of the gonocoxite).
Tony ---------- Tony Irwin |
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| Jozef Obona |
Posted on 30-09-2015 10:42
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Member Location: Slovakia Posts: 336 Joined: 07.12.10 |
Tony Irwin wrote: Thanks for help Tony... so Chaoborus and my big mistake with wrong tarsomeres  |
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| Gunnar M Kvifte |
Posted on 04-10-2015 11:08
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Member Location: Kassel, Germany Posts: 436 Joined: 18.08.09 |
Chaoborus is correct, probably crystallinus or flavicans. The easiest way to separate them in my opinion is treating the male terminalia in KOH and compare the penis valves with Sæther's figures. |
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but don't see the image in the post.