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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| Lower taxonomic level | Main Page | Alphabetic Index | Systematic Index | Glossary |
See also Urechis caupo
| 1a | With 2 nearly complete rings of bristlelike setae at the posterior end of the body (picture) | Echiurus echiurus subsp. alaskanus |
| 1b | Without setae at the posterior end of the body | 2 |
| 2a | With a pair of well-developed setae
near the anterior end of the trunk;
proboscis
(if still attached) troughlike, not branched; general coloration pinkish
to reddish
Note: When the genus Arhynchite was established, it was characterized by the apparent absence of a proboscis. Several species, including A. pugettensis, do have this structure, however. The proboscis is easily detached, and worms that have lost it may be normal in all other respects. It is possible that even the type species of Arhynchite will eventually be shown to have a proboscis. |
Arhynchite pugettensis |
| 2b | Without setae near the anterior end of the trunk or elsewhere; proboscis (if still attached) bifurcated; dorsal side of trunk greenish; proboscis and ventral side of trunk whitish | Nellobia eusoma |
Echiurus echiurus
subsp. alaskanus
Urechis caupo
