A new subterranean species of Pseudocrangonyx from China with an identification key to all species of the genus (Crustacea, Amphipoda, Pseudocrangonyctidae)

Shuangyan Zhao; Zhonge Hou

doi:10.3897/zookeys.647.11192

A new subterranean species of Pseudocrangonyx from China with an identification key to all species of the genus (Crustacea, Amphipoda, Pseudocrangonyctidae)

Zookeys. 2017 Jan 23:(647):1-22. doi: 10.3897/zookeys.647.11192. eCollection 2017.

Authors

Shuangyan Zhao¹, Zhonge Hou²

Affiliations

¹ Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China; College of Life Sciences, Hebei University, Baoding, Hebei 071002, China.
² Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China.

Abstract

A subterranean species of Pseudocrangonyx elegantulus Hou, sp. n. is described from caves of Wulongdong National Forest Park in Henan Province, China. Pseudocrangonyx elegantulus is characterized by both male and female with calceoli on antenna II; urosomite III dorsal margin without armature; uropod III with peduncle 0.30 times as long as outer ramus and terminal article of the outer ramus a little shorter than adjacent spines; telson cleft 0.27 of its length. Phylogenetic analysis based on 28S and COI sequences supported the species distinctness. A key to the genus Pseudocrangonyx with 22 species and a map of their distributions are provided.

Keywords: COI distance; Pseudocrangonyx; cave; molecular phylogeny; taxonomy.