Key:  Family Nephtyidae

Phylum Annelida
 Class Polychaeta
  Order Phyllodocida
   Superfamily Nephtyidacea

Taken primarily from  Kozloff, 1987, 1996  (Copyright 1987, 1996, University of Washington Press.  Used in this web page by permission of University of Washington Press)
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1a  Interramal cirrus (a downgrowth from the notopodium) curving to the extent that it makes more than 1 complete turn, and thus appearing somewhat spiralled; everted pharynx with 14 rows of papillae Aglaophamus rubella subsp. anops
1b Interramus cirrus not curving to the extent that it makes more than one complete turn, and sometimes scarcely curved at all; everted pharynx with 22 rows of papillae 2
2a Posterior prostomial antennae bifid; body not over 1.6 cm long 3
2b Posterior prostomial antennae not bifid; body generally more than 1.6 cm long 4
3a Setiger 3 with eyes; fenestrated setae present in all regions of the body Nephtys cornuta subsp. franciscana
3b Setiger 3 without eyes; fenestrated setae absent in the posterior region of the body Nephtys cornuta subsp. cornuta
4a Interramal cirri markedly curved, forming a C or a circle 5
4b Interramal cirri not markedly curved, and generally somewhat flattened 12
5a
5b
6a
6b
7a
7b
8a
8b
9a
9b
10a
10b
11a
11b
12a Interramal cirri appearing first on setiger 5, about as broad as long, and with a small distal prolongation; without a distinctive pigment pattern Nephtys brachycephala
12b Interramal cirri appering first on setiger 3, slightly flattened, but generally elongated; with a distinctive pigment pattern (in life), consisting of several dark longitudinal lines on both sides of the midline of each segment Nephtys ferruginea



Taxonomic Levels Represented in This Key:

Nephtys ferruginea



Page created by Dave Cowles, 2005
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