[Annelida] Nephtys sp.
(by jjourde from univ-lr.fr)
Tue Mar 15 05:40:59 EST 2011
My name is Jerome Jourde, currently benthologist in the University of
Brest (France). I'm a newcomer on the Annelida mailing, please forgive
my possible blunders (particularly as regards my English).
I recently tried to identify several specimens of Nephtys that do not
match with the various descriptions I have (Faune de France, Fauna
Iberica, Polychaeta of Southern Africa, Rainer's papers). These
specimens are mainly from South Brittany (France). The following
describes the main features of these specimens:
- Proboscis: 22 rows of 8-9 papillae, an odd dorsal papilla thinner and
shorter than the other papillae, no odd ventral papilla
- 1st Segment: ventral cirri slightly thicker and longer than the
antennae, dorsal cirri reduced to a small blister.
- gills appearing in the 4th setiger
- Median segments: notopodial and neuropodial presetal lamellae well
developed, notopodial presetal lamellae bilobed; notopodial postsetal
lamellae developed, almost reaching the gill, neuropodial postsetal
lamellae reduced, no rugose area seen near the aciculae
- branchial cirri well developed, almost as large as the gill at least
from the 25-30 th setiger to the end of the body(81 setigers)
Does anyone has encountered specimens corresponding to these
Thanks for any help !
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