Diptera.info :: Identification queries :: Diptera (adults)
 Aedes (Ochlerotatus) annulipes/cantans (female & male)
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| eklans |
Posted on 13-05-2020 12:08
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Member Location: Franconia, Germany Posts: 4551 Joined: 11.11.18 |
Hi, in a conservation area near Ansbach, Middle Franconia I found 3 males and 2 females on sycamore leaves this morning. I think it's Aedes [Hulecoeteomyia] koreicus and like to hear the experts comments. Thanks a lot! Eric Aedes (Ochlerotatus) annulipes/cantans by Tony Irwin eklans attached the following image:  [68.29Kb] Edited by eklans on 14-05-2020 17:58 |
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| eklans |
Posted on 13-05-2020 12:08
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Member Location: Franconia, Germany Posts: 4551 Joined: 11.11.18 |
male, thorax
eklans attached the following image:  [61.31Kb] |
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| eklans |
Posted on 13-05-2020 12:09
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Member Location: Franconia, Germany Posts: 4551 Joined: 11.11.18 |
female
eklans attached the following image:  [55.81Kb] |
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| Tony Irwin |
Posted on 13-05-2020 14:24
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 Member Location: Norwich, England Posts: 7352 Joined: 19.11.04 |
I'm not really familiar with koreicus (or japonicus), but from what I can discover, they would both have a more clearly striped thorax, white scales on the occiput, and white scales towards the base of the hind femur. These individuals appear to me to be Ochlerotatus, near annulipes.
Tony ---------- Tony Irwin |
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| eklans |
Posted on 13-05-2020 15:56
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Member Location: Franconia, Germany Posts: 4551 Joined: 11.11.18 |
Hi Tony, thank you very much - and I think you're right. I will try to find those again tomorrow morning to take more fotos - especially of thorax and abdomen. Eric |
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| Tony Irwin |
Posted on 13-05-2020 21:05
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Member Location: Norwich, England Posts: 7352 Joined: 19.11.04 |
Yes, getting some lateral shots always helps! 
Tony ---------- Tony Irwin |
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| eklans |
Posted on 14-05-2020 09:49
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Member Location: Franconia, Germany Posts: 4551 Joined: 11.11.18 |
and here they are:
eklans attached the following image:  [47.8Kb] |
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| eklans |
Posted on 14-05-2020 09:51
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Member Location: Franconia, Germany Posts: 4551 Joined: 11.11.18 |
and another one Length of basal ring tarsomere 2 < half of tarsomere length = cantans? (I've invited one male to stay with me this morning - if we need more details...) Thanks, Eric eklans attached the following image:  [78.48Kb] Edited by eklans on 14-05-2020 10:14 |
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| eklans |
Posted on 14-05-2020 11:53
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Member Location: Franconia, Germany Posts: 4551 Joined: 11.11.18 |
shows the abdomen
eklans attached the following image:  [69.02Kb] |
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| eklans |
Posted on 14-05-2020 11:54
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Member Location: Franconia, Germany Posts: 4551 Joined: 11.11.18 |
and a lateral
eklans attached the following image:  [90.09Kb] |
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| Tony Irwin |
Posted on 14-05-2020 12:06
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Member Location: Norwich, England Posts: 7352 Joined: 19.11.04 |
Your photos confirm that these are not koreicus or japonicus, but whether they are annulipes or cantans? - well, I often find these difficult to separate. Structures in the male genitalia seem to be the most reliable characters.
Tony ---------- Tony Irwin |
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| eklans |
Posted on 14-05-2020 12:48
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Member Location: Franconia, Germany Posts: 4551 Joined: 11.11.18 |
Yes, clearly not koreicus or japonicus - thank you very much, Tony! What do you think of MosKeyTools hint, length of basal ring tarsomere 2 < half of tarsomere length = cantans while length of basal ring tarsomere 2 >= half of tarsomere length = annulipes? http://bioinfo-web.mpl.ird.fr/identiciels/moskeytool_V2.1/html/ Eric |
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| Tony Irwin |
Posted on 14-05-2020 17:19
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Member Location: Norwich, England Posts: 7352 Joined: 19.11.04 |
The length of he basal ring does seem to vary quite a bit. If it's clearly half or more, then I'd say annulipes; if it's clearly a third or less I'd say cantans. The problem is the (many) individuals where the ring is between a third and a half!
Tony ---------- Tony Irwin |
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| eklans |
Posted on 14-05-2020 17:57
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Member Location: Franconia, Germany Posts: 4551 Joined: 11.11.18 |
Thanks again, Tony. So I change the title accordingly. Kind regards, Eric |
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