Ma Zijun, Huang Sunbin, Tian Mingyi
Department of Entomology, College of Plant Protection, South China Agricultural University, 483 Wushan Road, Guangzhou, 510642, CHINA.
Zootaxa. 2020 Oct 20;4861(4):zootaxa.4861.4.6. doi: 10.11646/zootaxa.4861.4.6.
Two highly modified new species of cave-adapted trechine beetles are described from Guizhou Province and Guangxi Zhuang Autonomous Region: Sinaphaenops (Sinaphaenops) chengguangyuani n. sp. (Guizhou: Longli: cave Shuijing Dong), belonging to the banshanicus species group of the genus Sinaphaenops Uéno Wang, 1991; Giraffaphaenops brevicephalus n. sp. (Guangxi: Leye: cave Dalongguan Dong), being the third species of the genus Giraffaphaenops Deuve, 2002, with a shorter but broader head than its congeners. Keys to identify the species of the banshanicus species group and the genus Giraffaphaenops are provided respectively.
程光元华冥步甲（Sinaphaenops (Sinaphaenops) chengguangyuani）新种（贵州：龙里：水井洞），属于华冥步甲属（Sinaphaenops）王和上野（Uéno Wang）1991年定义的半山华冥步甲物种组；短头长颈鹿步甲（Giraffaphaenops brevicephalus）新种（广西：乐业：大龙官洞），是长颈鹿步甲属（Giraffaphaenops）德夫（Deuve）2002年定义的第三个物种，其头部比同属其他物种更短更宽。文中分别提供了半山华冥步甲物种组和长颈鹿步甲属物种的鉴定检索表。
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