Key:  Family Phyllodocidae

Phylum Annelida
  Class Polychaeta
    Subclass Palpata
      Order Aciculata
        Suborder Phyllodocida

Taken primarily from  Kozloff, 1987, 1996 p. 121  (Copyright 1987, 1996, University of Washington Press.  Used in this web page by permission of University of Washington Press)
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1a  With 2 pairs of tentacular cirri on segment 1, none on segment 2 2
1b With 3 or 4 pairs of tentacular cirri, some of these on segment 1, the others on 1 or 2 of the succeeding segments 6
2a
2b
3a
3b
4a
4b
5a
5b
6a With 3 pairs of tentacular cirri on 2 or 3 segments 7
6b With 4 pairs of tentacular cirri on 3 segments (segments 1 and 2 may be fused, however, in which case 3 of the pairs of tentacular cirri will be on what appears to be segment 1) 8
7a Setae beginning on segment 3; dorsal and ventral cirri of parapodia oval or nearly circular, not decidedly elongated; setae of a particular parapodium with blades of unequal length (the middle setae have blades nearly twice as long as the of the upper and lower setae). Hesionura coineaui subsp. difficilis
7b Setae beginning on segment 2; dorsal and ventral cirri of parapodia elongated; setae of a particular parapodium with blades of about equal length Mystides borealis
8a
8b
9a
9b
10a
10b
11a
11b
12a
12b
13a
13b
14a
14b
15a
15b
16a
16b
17a
17b
18a
18b
19a
19b
20a
20b
21a
21b
22a
22b
23a
23b
24a
24b
25a
25b
26a
26b
27a
27b
28a
28b
29a
29b
30a
30b
31a
31b
32a
32b
33a
33b
34a
34b
35a
35b



Taxonomic Levels Represented in This Key:

  Mystides borealis
 



Page created by Dave Cowles, 2007
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