Diptera.info :: Identification queries :: Diptera (eggs, larvae, pupae)
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 Ibisia marginata
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| solito de solis |
Posted on 15-04-2015 22:25
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 Member Location: Liege, Belgium Posts: 404 Joined: 05.08.13 |
larvae living in a quiet and sandy freshwater, collected yesterday Who can tell me what are these tapering projections we see on the different abdominal segments (different of the hooked prolegs)? Are they gills too ? Is this larvae Atherix sp or Atherix Ibis ? thank you SDS YouTube Video Edited by solito de solis on 16-04-2015 19:57 |
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| atylotus |
Posted on 16-04-2015 14:21
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 Member Location: Amsterdam, NL Posts: 1140 Joined: 29.05.09 |
These lateral projections on the abdomen are too long for Atherix. So this must be Ibisia marginata. According to the literature: Atherix should have the integument appearing smooth and clean while in Ibisia it appears rugose and frequently covered with particles or chalc concretions (at low magnification) but I can't see that. The tapering hairy prolongations at the end do not have an actual gill-function but it uses it as floating hairs and lobes so their actual posterior spiracles will come into contact with the surface. Were did you collect it? By the way if it was Atherix, you couldn't identify it to species level for A. flavipes haven't been described as larvae. Edited by atylotus on 16-04-2015 14:26 |
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| solito de solis |
Posted on 16-04-2015 14:52
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Member Location: Liege, Belgium Posts: 404 Joined: 05.08.13 |
Hello... glad to receive your message I found this individu in the Aisne river here  Do you believe I can let Atherix or make change to Ibisia ? Nevertheless, this organism is an Athericidae, isn't it ? merci Solito Edited by solito de solis on 16-04-2015 14:53 |
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| atylotus |
Posted on 16-04-2015 15:36
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Member Location: Amsterdam, NL Posts: 1140 Joined: 29.05.09 |
Ibisia marginata it is, which is Athericidae May I suggest to add your record to http://observado.org/ Edited by atylotus on 16-04-2015 16:30 |
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| solito de solis |
Posted on 16-04-2015 17:49
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Member Location: Liege, Belgium Posts: 404 Joined: 05.08.13 |
Veel bedank, Heer Atylotus Your suggestion observado will receive my attention I post here a few details of this larvae ( after two days left in the sample without alcohol or whatever formaline) last floating hairs  first proleg hooks  first proleg (one of)  head  antenna ?  lauterborn organs ?  last and single big proleg (double sized)  spines on the "skin"  sided projection articulation  last abdominal segment side hairs  eyes  merci SOlito Edited by solito de solis on 16-04-2015 18:10 |
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