Odontolochini (Stebnicka and Howden, 1996)

Skelley, Paul E., 2007, New South American taxa of Odontolochini Stebnicka and Howden (Coleoptera: Scarabaeidae: Aphodiinae), Insecta Mundi 2007 (22), pp. 1-15 : 2

Key to New World Genera of Odontolochini

(modified from Stebnicka and Galante 2007)

1. Clypeal margin not distinctly thickened, with 5-7 denticles on each side of weak median emargination ( Fig. 1 ); clypeal surface anteriorly flattened at middle; exposed disc of pygidium not eroded; South America ............................................................... Saprositellus Balthasar

— Clypeal margin distinctly thickened, lacking denticles on each side of strong median emargination, margin smooth ( Fig. 2-4 ); exposed disc of pygidium eroded; South America and elsewhere ... 2

2(1). Pronotum with coarse punctures restricted to broad transverse depression along basal third, anterior 2/3 swollen and finely punctate ( Fig. 3 ); protibial teeth widely separated, apical tooth longer than middle tooth; Peru............................................................. Stebnickiella , n. gen.

— Pronotum with punctures evenly distributed, base lacking broad transverse depression ( Fig. 2, 4 ); most with protibial teeth close, restricted to apical third, apical tooth same size or smaller than middle tooth; widespread .................................................................................................. 3

3(2). Body elongate, surface argillaceous; head with punctures evenly distributed, obscured by argillaceous coating ( Fig. 4 ); pronotum with 2 medial longitudinal ridges; alternate elytral intervals weakly carinate; Peru............................................................. Amerilochus , n. gen.

— Body stout, surface not argillaceous, can be somewhat dulled (alutaceous)or glossy; head with band of large punctures at base, extremely fine punctures anteriorly ( Fig. 2 ); pronotum evenly

Figures

Figure 1-4. Key characters. 1) Saprositellus ariquemes Stebnicka, head and pronotum. 2) Saprolochus tambopatae Stebnicka and Galante, head and pronotum. 3) Stebnickiella zosterixys, n. gen., n. sp., lateral habitus. 4) Amerilochus cinereus, n. gen., n. sp., head and pronotum.