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Two New Species of Spiochaetopterus (Polychaeta: Chaetopteridae) from Okinawa, Japan, with Notes on Pacific Spiochaetopterus

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Title: Two New Species of Spiochaetopterus (Polychaeta: Chaetopteridae) from Okinawa, Japan, with Notes on Pacific Spiochaetopterus
Authors: Nishi, Eijiroh
Bhaud, Michel
Issue Date: Jan 2000
Publisher: University of Hawai'i Press
Citation: Nishi E, Bhaud M. 2000. Two new species of Spiochaetopterus (Polychaeta: Chaetopteridae) from Okinawa, Japan, with notes on Pacific Spiochaetopterus. Pac Sci 54(1): 15-26.
Abstract: Two new species of Spiochaetopterus are described from recently
collected material from sandy substrates at Bise Beach and Sesoko Island in
northern Okinawa, southern Japan. These two new species, Spiochaetopterus
okinawaensis and S. sesokoensis, are similar in body size but differ with respect
to presence or absence of eyes, bilobed or unilobed Bl neuropodia, and morphology
of the specialized modified A4 chaeta. In S. okinawaensis there are
oculate spots on the lateral side of the prostomium, neuropodia of segment B1
are unilobed but those on the other segments are bilobed, and the tube lacks
periodic rings. There are no oculate spots in S. sesokoensis; all the neuropodia
of the B segments are bilobed, including Bl; and the ventral gland in the anterior
A region lacks a pale white crescent.
URI/DOI: http://hdl.handle.net/10125/1594
ISSN: 0030-8870
Appears in Collections:Pacific Science Volume 54, Number 1, 2000



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