Callosides, Howden. Unfortunately, 1971

Howden, H. F., 2001, A New Tribe Of Hybosorinae With A Description Of A New Species Of Callosides Howden (Coleoptera: Scarabaeidae), The Coleopterists Bulletin 55 (2), pp. 199-204 : 202-203

Key to Species of Callosides

1 Pronotum with four obvious, large tubercles; head with two longitudinal swellings -------------------------------------------------------------------------------------------------------------------------- 2

1' Pronotum with two, small, lateral tubercles; head unevenly convex; male genitalia as in Figures 8, 9 ; Valle del Cauca, Colombia ----------------------------------- ---------------------------------------------------------------------------------------------------------------------------- C. campbelli Howden

2 Elytral disc between suture and lateral carina with two irregular rows of small tubercles, tubercles on apical declivity rounded, sides not abruptly elevated; male genitalia as in Figures 6, 7 ; Carchı´, Ecuador ----------------------- ----------------------------------------------------------------------------------------------------------------------------------------- C. genieri n. sp.

2' Elytral disc between suture and lateral carina lacking rows of tubercles, tubercles on apical declivity abruptly elevated; genitalia as in Figures 10, 11 ; Napo, Ecuador ------------------------------- C. bartolozzii Paulian and Cambefort

Figures

Figs. 1–11. Callosides spp. 1–7) C. genieri: 1) male dorsum; 2) fore tibia, male; 3) fore tibia, female; 4) right mandible, ventral view; 5) epipharynx; 6) parameres, ventral view; 7) paramere, lateral view. 8–9) C. campbelli: 8) parameres, dorsal view; 9) paramere, lateral view. 10–11) C. bartolozzii: 10) parameres, dorsal view; 11) paramere, lateral view.