Seesamut Teerapong, Sutcharit Chirasak, Jirapatrasilp Parin, Chanabun Ratmanee, Panha Somsak
Biological Sciences Program, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand. Animal Systematics Research Unit, Depart ment of Biology, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand..
Zootaxa. 2018 Oct 4;4496(1):218-237. doi: 10.11646/zootaxa.4496.1.18.
A new species of the megascolecid earthworm genus Pontodrilus Perrier, 1874, Pontodrilus longissimus sp. n., is described from seashores of Thailand and Peninsular Malaysia. The new species differs from congeners, especially the cosmopolitan P. litoralis (Grube, 1855) in the size of the body, number of segments and the shape of the spermathecae. P. litoralis is redescribed, based on specimens collected from the same region and the same type of habitat. DNA fragments of the mitochondrial cytochrome oxidase subunit I of both species were sequenced. Morphological as well as DNA sequence-based comparisons confirm that P. longissimus sp. n. is a lineage distinct from P. litoralis and in fact a new species. The illustrated descriptions are accompanied by a key to species of Pontodrilus.
1874年，佩里尔建立了巨蚓科蚯蚓属Pontodrilus，本文描述了该属的一个新物种——长形Pontodrilus longissimus sp. n.，发现于泰国和马来西亚半岛的海岸。新物种与同属其他物种不同，特别是与分布于世界各地的海滨Pontodrilus litoralis（格鲁贝，1855年）在体型、体节数量和受精囊形状方面存在差异。基于从同一地区和相同类型栖息地采集的标本，对海滨Pontodrilus litoralis进行了重新描述。对这两个物种的线粒体细胞色素氧化酶亚基I的DNA片段进行了测序。形态学以及基于DNA序列的比较证实，长形Pontodrilus longissimus sp. n.是一个与海滨Pontodrilus litoralis不同的谱系，实际上是一个新物种。文中配有图示描述，并附有Pontodrilus属物种检索表。
