[Annelida] Eunicida: Nothria conchylega ?

Stanislas DUBOIS via annelida%40net.bio.net (by Stanislas.Dubois from ifremer.fr)
Mon Oct 4 03:07:38 EST 2010

Hi polychaete lovers,

I'm currently fighting with a few individuals from the same species very 
likely from the genus Nothria (Malmgren, 1866) but base on the keys I'm 
using (i.e. Synopsis of the British Fauna n°32, Eunicida), I can't come 
up with something satisfacory.  Everything match with Nothria conchylega 
(Sars, 1835) except the stout hooked chaeta from chaetiger 1 & 2 that 
are missing and the occurrence of clearly bidendate hooked chaeta 
instead.  Speciment have been collected in South Brittany, France and I 
do have "true" specimen of Nothria conchylega (Sars, 1835) from that 
region with the stout hooked chaeta from chaetiger 1 & 2.

So, what is wrong with me?  Does anyone have a better key with a better 
description of this genus to provide?  Have anyone face this problem yet?

Thanks for your help,


Stanislas DUBOIS (PhD)
Laboratoire DYNECO / Ecologie Benthique
IFREMER - French Research Institute for Exploitation of the Sea
Technopole de Brest-Iroise
B.P. 70 - 29280 Plouzané - FRANCE
Tel: (33) +2 98 22 49 18
Mob: (33) +6 83 07 70 28
Fax: (33) +2 98 22 45 48
email: sdubois from ifremer.fr

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