Gonaphodioides, Dellacasa & Dellacasa & Gordon, 2012

Dellacasa, Marco, Dellacasa, Giovanni & Gordon, Robert D., 2012, Systematic revision of Gonaphodiellus taxa, with description of two new genera and fourteen new species (Coleoptera: Scarabaeidae: Aphodiinae), Insecta Mundi 2012 (230), pp. 1-41 : 15-16

Key to species of Gonaphodioides

1. Elytra denticulate at shoulder ....................................................................................................... 2

— Elytra not denticulate at shoulder but therein with distinctly raised epipleural carina .......... 6

2(1). Elytra subparallel-sided, very elongate. Chestnut-brown. Length 5.5-6.0 mm. Bolivia, Colombia.................................................................................................. G. acutecernans (Balthasar)

— Elytra oval, less elongate ............................................................................................................... 3

3(2). Elytral interstriae distinctly convex. Chestnut-brown. Length 4.0-5.0 mm. Colombia, Venezuela............................................................................................................. G. columbicus (Harold)

— Elytral interstriae flat or almost flat ............................................................................................ 4

4(3). Pronotum dually punctured; few large punctures irregularly scattered on sides; very fine small punctures evenly, not closely sparse throughout. Black. Length 5.0-6.0 mm. Mexico (Chiapas) ............................................................................................................. G. skelleyi new species

— Pronotum simply, evenly regularly or almost regularly punctured ........................................... 5

5(4). Elytral interstriae rather coarsely, not very closely punctured. Dark chestnut brown. Length 3.5-4.0 mm Mexico (Oaxaca) ........................................................... G. ratcliffei new species

— Elytral interstriae very finely, sparsely punctured. Dark brown. Length 4.0-4.5 mm. Mexico (Hidalgo, Puebla, San Luis Potosí) .................................................. G. newtoni new species

6(1). Elytral interstriae flat, superficially microreticulate thus almost dull; sides of pronotum relatively more coarsely and more irregularly punctured. Reddish-testaceous. Length 3.5-4.0 mm. Bolivia, Brazil, Paraguay................................................................................. G. sincerus (Petrovitz)

— Elytral interstriae convex, smooth thus shiny; sides of pronotum relatively less coarsely and more regularly punctured. Chestnut brown. Length 4.0-4.5 mm. Brazil, Costa Rica, Ecuador, Mexico (Oaxaca), Panama, Peru, Venezuela.......................................... G. chapini (Hinton)