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Diptera.info :: Identification queries :: Other insects, spiders, etc.
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No Idea. Sediment dwelling animal (NL)
blaauw7
#1 Print Post
Posted on 28-10-2016 12:48
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Location: Wageningen, Netherlands
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Found on the sediment of a lake in the middle of the Netherlands. I have no idea?

Gr Dick
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blaauw7
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blaauw7
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blaauw7
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Posted on 28-10-2016 12:50
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John Carr
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Posted on 28-10-2016 14:03
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Not Diptera because it has jointed legs. Soem other holometabolous insect larva.
 
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atylotus
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Posted on 28-10-2016 15:21
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A crustacean Isopod: Cyathura carinata, a common brackish water inhabitant. probably collected near the outflow of the North Sea canal near Amsterdam?
Ton van Haaren
Amsterdam
Edited by atylotus on 28-10-2016 15:22
 
John Carr
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Posted on 28-10-2016 16:29
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atylotus wrote:
A crustacean Isopod: Cyathura carinata, a common brackish water inhabitant. probably collected near the outflow of the North Sea canal near Amsterdam?
Ton van Haaren
Amsterdam


At least I got the right phylum. What should I look for to identify this as an isopod?
 
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blaauw7
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Posted on 30-10-2016 12:27
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Thanks! Found in the Markermeer near Amsterdam!

Gr Dick
 
atylotus
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Posted on 30-10-2016 17:00
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Well. telling why this is an Isopod is even more difficult than telling what species this is. I just recognize the species just by its habitus. I have seen this one over a hundred times. It is a crustacean for it has two pairs of antenna unlike any other invertebrate. This is hard to see on the photos because they are positioned dorsally and ventrally so the ventral ones are hard to spot. But I cannot tell you why this is an Isopod.
 
Tony Irwin
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Posted on 30-10-2016 21:32
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Iso (=equal) poda (=foot). The legs on this creature are all very similar, unlike those of the Amphipoda (sandhoppers, etc). There are other orders of crustaceans which can be similar (e.g. Tanaids),but they tend to be smaller. The chromatophores (star-shaped pigment cells visible through the cuticle) are typically found in marine isopods, as well as in the evidently different smaller decapods (prawns, etc), but as Atylotus says, recognising the species is the easiest way of placing these creatures in the right Phylum, Class and Order.
Tony
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Tony Irwin
 
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