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 Amynthas Kinberg, 1867 Amynthas Kinberg, 1867 : 97 ; Sims & Easton 1972 : 211 ; Blakemore 2002 : 149 . Amyntas Kinberg, 1867 : 101 ; Beddard 1900 : 612 . Nitocris Kinberg, 1867 : 102 . Pheretima (part) Kinberg, 1867 : 102 ; Michaelsen 1900 : 234 . Perichaeta (part) — Beddard 1895a : 388 . Pheretima ( Pheretima ) (part) — Michaelsen 1928: 8. Pheretima ( Metapheretima ) (part) — Michaelsen 1928: 8. Pheretima ( Terrata ) (part) Thai, 1983 : 123 . Type species. Amynthas aeruginosus Kinberg, 1867 , by monotypy Distribution. Widely distributed in the Oriental region, and also found in Australasian and Oceania regions ( Sims & Easton 1972 ; Blakemore 2012a ). Remarks. Members of the genus can be easily recognized by the presence of intestinal caeca at or near xxvii and the absence of copulatory pouches. It is noted that about 400 nominal species have been recorded, but possibly more than half are synonyms (Blakemore 20 12a). To date, 110 species have been found in Vietnam.