original description
(of Amydrinus pongus Chamberlin, 1941) Chamberlin, R. V. (1941). On a collection of millipedes and centipedes from Northeastern Peru. Bulletin of the American Museum of natural History, 78(7): 473-535. NewYork
page(s): 500 [details] Available for editors 
original description
(of Phinotropis tidus Chamberlin, 1941) Chamberlin, R. V. (1941). On a collection of millipedes and centipedes from Northeastern Peru. Bulletin of the American Museum of natural History, 78(7): 473-535. NewYork
page(s): 499 [details] Available for editors 
new combination reference
Hoffman, R. L. (1995). Redefinition of the millipede genus Pycnotropis, and description of a new species from Manaus, Brazil (Polydesmida: Platyrhacidae: Euryurinae). Amazoniana, 13(3-4): 283-292. Kiel
page(s): 288, figs. 9-11 [details]
From editor or global species database