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 Xanthochlorus tenellus or Xanthochlorus ornatus?
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| thijsdegraaf |
Posted on 17-07-2018 19:31
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Member Location: Bergen (NH) Posts: 838 Joined: 21.10.08 |
Xanthochlorus tenellus or Xanthochlorus ornatus? Photos 12-7-2018, Bergen, The Netherlands. In the ivy against the wall. On https://www.dipte...Europe.pdf page 117 Thorax almost entirely yellow, more or less darkened only on prescutellar depression; scutellum usually entirely yellow; 2.5-3.5 .. tenellus Wiedemann – Disc of thorax and scutellum darkened, entirely greenish or bronze, dusted grayish; 2.75-3.0..................................................................ornatus Haliday Despite this information, I am not sure about the species. I've already asked on the Dutch forum: https://forum.waa...c=431358.0 I hope you know more. Regards, Thijs thijsdegraaf attached the following image:  [29.96Kb] Edited by thijsdegraaf on 17-07-2018 19:33 http://www.tuin-t...engels.htm |
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| thijsdegraaf |
Posted on 17-07-2018 19:35
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Member Location: Bergen (NH) Posts: 838 Joined: 21.10.08 |
second photo:
thijsdegraaf attached the following image:  [31.74Kb] http://www.tuin-t...engels.htm |
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| Mark-uk |
Posted on 18-07-2018 18:32
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 Member Location: UK - Hampshire Posts: 792 Joined: 01.02.10 |
Try "Chandler & Negrobov (2008) The British species of Xanthochlorus Loew, 1857 (Diptera, Dolichopodidae), with description of two new species. Dipterists Digest (Second Series) 15, 29-40." Using that key I suspect you have Xanthochlorus tenellus? |
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| thijsdegraaf |
Posted on 19-07-2018 07:21
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Member Location: Bergen (NH) Posts: 838 Joined: 21.10.08 |
Thanks Mark. You mean https://www.dipte...202008.pdf . Yes I think so, when I read This species is very similar to X. silaceus, having a similar extent of greenish coloration on the thorax, restricted to the prescutellar area between the posterior dorsocentrals but in X. tenellus this is rather more defined and almost as distinct in the female as in the male. But I'm still not sure. Regards, Thijs Edited by thijsdegraaf on 20-07-2018 07:06 http://www.tuin-t...engels.htm |
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