A comprehensive checklist of earthworm species and subspecies from Vietnam (Annelida: Clitellata: Oligochaeta: Almidae, Eudrilidae, Glossoscolecidae, Lumbricidae, Megascolecidae, Moniligastridae, Ocnerodrilidae, Octochaetidae) Author Nguyen, Tung T. Author Nguyen, Anh D. Author Tran, Binh T. T. Author Blakemore, Robert J. text Zootaxa 2016 4140 1 1 92 journal article 10.11646/zootaxa.4140.1.1 01995ca4-7d04-4402-b21a-926957b1a391 1175-5326 256507 AD1F6B4E-3B0D-422C-B47C-0495BD385857 Genus Pithemera Sims & Easton, 1972 Pithemera Sim & Easton, 1972 : 202 . Type species. Perichaeta bicincta Perrier, 1875 , by original designation. Distribution. Mainly in Pacific Isls, e.g. Solomon Isl., New Britain , Fiji , Samoa , Philippines ( Sims & Easton 1972 : 202; Blakemore 2002 : 223, 2012a). Remarks. Members of the genus are easily recognized by the presence of intestinal caeca at xxi–xxiv, absence of copulatory pouches, and single or paired female pores on xiv. Currently, twelve species have been described ( Csuzdi 2012 ), but only one has been found in Vietnam.