Three new species of the genus Amynthas (Oligochaeta: Megascolecidae) from Guangxi Zhuang Autonomous Region, China.

ABSTRACT

Three new earthworm species of the genus Amynthas Kinberg, 1867 were found in Guangxi Zhuang Autonomous Region, China Amynthas huapingensis sp. nov., Amynthas retentus sp. nov. and Amynthas linguiensis sp. nov. Amynthas huapingensis sp. nov. belongs to Amynthas corticis-group characterized by having four pairs of spermathecal pores in 5/68/9; Amynthas retentus sp. nov., without spermathecal pores, belongs to Amynthas illotus-group; Amynthas huapingensis sp. nov. and Amynthas retentus sp. nov. have similar characteristics of male porophores medially surrounded by 23 genital papillae in a pulvinate pad within the male pore area. Amynthas linguiensis sp. nov. has variable spermathecal pores, three pairs in 6/78/9 or four pairs in 5/68/9. And its male pores each on the center of a large elliptical glandular porophore which extends from 1/4xvii to 1/4xix. The morphological comparison and COI gene data of these three new species and their similar species are given in this paper.