產於台灣東北部一新種腔環蚓之描述

A New species of the Earthworm Belonging to the Genus Metaphire Sims and Easton (Megascolecidae: Oligochaeta) from the Northeastern Taiwan

This paper describes a new species of the earthworm Metaphire trutina sp. nov. (Megascolecidae: Oligochaeta) from Hsiaochaochi, Ilan of the northeastern Taiwan. It is a large, sexthecal and holandric earthworm, and has a pair of large, round genital papillae with slightly concave centers on narrow male disc in each of the shallow copulatory chambers in XVIII. It belongs to the houlleti species-group of the genus Metaphire Sims and Easton and closely relates to Metaphire tschiliensis (Michaelsen, 1928), Metaphire viridis Feng and Ma, 1987, Metaphire vulgaris (Chen, 1930), and Metaphire praepinguis (Gates, 1935) of China, and Metaphire aggera (Kobayashi, 1934) of Korea and Manchuria. 本文描述產於台灣東北部宜蘭縣小礁溪一新種腔環蚓： Metaphire trutina sp. nov.。其為大型蚯蚓，第十八體節的交配腔淺裂，內有一對大而圓的生殖突起。M. trutina屬於 Metaphire屬之 houlleti種群，與產於中國大陸的 Metaphire tschiliensis（Michaelsen, 1928）、 Metaphire viridis Feng and Ma, 1987、 Metaphire vulgaris（Chen, 1930）、 Metaphire praepinguis（Gates, 1935）以及韓國的 Metaphire aggera（Kobayashi, 1934）密切相關。