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Vol. 45 No. 4, 2006
New Species and New Records of the Perinereis nuntia Species Group (Nereididae: Polychaeta) from Taiwan and Other Indo-West Pacific Shores
Christopher J. Glasby1,* and Hwey-Lian Hsieh2
1Museum
and Art Gallery of the Northern Territory, GPO Box 4646, Darwin,
Northern Territory 0801, Australia. E-mail:chris.glasby@nt.gov.au
2Research Center for Biodiversity, Academia Sinica, Taipei, Taiwan 115. E-mail:zohl@gate.sinica.edu.tw
Christopher J. Glasby and Hwey-Lian Hsieh (2006) This study was undertaken in order to describe new and poorly known species of the Perinereis nuntia
species group (Nereididae: Polychaeta), which are concurrently being
investigated genetically. Six species are described from intertidal
waters of Taiwan and adjacent areas, including southern Japan,
east-central and southeastern China, Singapore, Malaysia, and Indonesia
(Java). These include P. mictodonda (Marenzeller, 1879), P. nuntia (Savigny, 1818), P. rhombodonta (Wu, Sun and Yang, 1981), and 3 new species, P. shikueii sp. nov., P. viridis sp. nov., and P. wilsoni sp. nov. Literature records of P. nuntia brevicirris from the region are referred to as P. mictodonta; those of P. nuntia vallata are referred to as P. wilsoni sp.
nov. All species can be distinguished by a combination of pharyngeal
paragnath numbers and the arrangement, and length ratios of the dorsal
cirrus to dorsal notopodial ligule of the anterior and posterior
parapodia. A key to tropical and subtropical Indo-West Pacific species
of the P. nuntia species group is provided. All species inhabit intertidal sandy substrata under rocks or boulders, except P. viridis sp. nov., which occurs on reef shores in rock crevices. Perinereis wilsoni sp.
nov. is found on rocky or reef limestone coasts, whereas the other 4
species occur mainly on sedimentary intertidal flats. The high
diversity of the P. nuntia
species group in Taiwan is attributed to a combination of factors
including intrinsic reproductive features and Taiwan's position
straddling 2 major biogeographic regions: the tropical Indo-West
Pacific and the temperate Japan-East China Sea. The present results
reveal a degree of sympatry not previously reported for the genus.
Key words: Taxonomy, Morphology, Multivariate statistics, Sympatry.
*Correspondence: Tel: 61-8-89998108. Fax: 61-8-89998289. E-mail:chris.glasby@nt.gov.au
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