Diptera.info :: Identification queries :: Diptera (eggs, larvae, pupae)
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 Chaoboridae
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| cyprinoid |
Posted on 05-12-2009 19:29
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 Member Location: Norway Posts: 1751 Joined: 19.06.09 |
Is it possible to say more than Chaoborus sp.? about 15mm, origin is Denmark cyprinoid attached the following image:  [145.37Kb] Edited by cyprinoid on 07-12-2009 09:06 Hyperbolizer |
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| cyprinoid |
Posted on 05-12-2009 19:30
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Member Location: Norway Posts: 1751 Joined: 19.06.09 |
full body
cyprinoid attached the following image:  [167.75Kb] Hyperbolizer |
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| atylotus |
Posted on 07-12-2009 10:00
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 Member Location: Amsterdam, NL Posts: 1120 Joined: 29.05.09 |
According to Saether (in Nillson, 1997) there are 3 species of Chaoborus in Denmark: C. crystallinus, C. flavicans and C. obscuripes. When I look at the labral blade (the hyaline toothes lamellae at the ventral side of the head just posterior of the antenna) it must be C. obscuripes. In C. crystallinus and C. flavicans this labral blade is protruded into a long threadlike extension. |
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| cyprinoid |
Posted on 07-12-2009 10:32
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Member Location: Norway Posts: 1751 Joined: 19.06.09 |
Great! Thank you!
Hyperbolizer |
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| atylotus |
Posted on 07-12-2009 12:48
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Member Location: Amsterdam, NL Posts: 1120 Joined: 29.05.09 |
I will show the keys and figures from Saether & Nillson and an adapted photo to localize the labral blade
atylotus attached the following image:  [32.77Kb] Edited by atylotus on 07-12-2009 12:54 |
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| atylotus |
Posted on 07-12-2009 12:49
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Member Location: Amsterdam, NL Posts: 1120 Joined: 29.05.09 |
saether in Nillson, 1997 keys
atylotus attached the following image:  [78.5Kb] Edited by atylotus on 07-12-2009 12:52 |
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| atylotus |
Posted on 07-12-2009 12:53
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Member Location: Amsterdam, NL Posts: 1120 Joined: 29.05.09 |
Saether inNillson, 1997 figures see fig 93, Lb for Labral blade, one of the diagnostic features in Chaoborus larva recognition 99: C. crystallinus 100: C. flavicans (also with characteristic mandible showing intermediat teeth instead) 101: C. obscuripes 102: C. nyblaei (not in Denmark) 103: C. pallidus (apparantly not in Denmark) atylotus attached the following image:  [35.98Kb] Edited by atylotus on 07-12-2009 12:57 |
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| cyprinoid |
Posted on 07-12-2009 13:05
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Member Location: Norway Posts: 1751 Joined: 19.06.09 |
Excellent. Now I know what a labral blade is! And I know what to look for when trying to find the two others  Thank you very much for taking the trouble! Hyperbolizer |
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but don't see the image in the post.