Abstract
Ptomaphaginus troglodytes sp. n., the first anophthalmic species of Ptomaphaginus Portevin, 1914 is described from two close caves in Libo Karst, south Guizhou Province, China.
Highlights
Ptomaphagini is, after Leptodirini, the richest tribe of Cholevinae in species living in subterranean environment
Dissected specimens were relaxed in warm water
Male genitalia were directly dehydrated in ethanol 95% mounted in Euparal
Summary
Ptomaphagini is, after Leptodirini, the richest tribe of Cholevinae in species living in subterranean environment (caves or other subterranean habitats). Unlike Leptodirini, in which all species except a few dozen are anophthalmic, cave-dwelling species of Ptomaphagini are at most microphthalmic, a single species is fully anophthalmic. The tribe is presently divided into three subtribes: Baryodirina, Ptomaphagina, and Ptomaphaginina (Perreau 2000). The phylogenetic relevance of this division has been discussed (Gnaspini 1996) but recently confirmed (Antunes Carvalho et al 2017).
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