Cyclocephalini

Gasca-Álvarez, Héctor & Amat-García, Germán, 2010, Synopsis and key to the genera of Dynastinae (Coleoptera, Scarabaeoidea, Scarabaeidae) of Colombia, ZooKeys 34 (34), pp. 153-192 : 160

Key to the genera of adult Cyclocephalini of Colombia

1. Protarsomeres in males enlarged; external claws larger than internal. Females with protarsomeres and claws simple. Clypeal length subequal to or long- er than length of frons; apex parabolic, quadrate, weakly emarginated, or rounded. Metatibia semicircular in cross section ........................................ 2

– Protarsomeres in males and females simple, not enlarged; tarsal claws simple. Clypeal length shorter than length of frons; apex trapezoidal ( Fig. 8). Metatibia flattened dorsoventrally, not semicircular in cross section ...................... ............................................................................... Stenocrates Burmeister

2. Propygidium with numerous long setae ........................... Chalepides Casey

– Propygidium without long setae................................................................. 3

3. Clypeus with apex acute or narrowly parabolic........................................... 4

– Clypeus with apex rounded, truncate, trapezoidal, or emarginate............... 5

4. Clypeus with apex acuminate ( Fig. 9 ). Mentum with apex emarginate, surface not furrowed in apical third. Base of pronotum with marginal bead...... .......................................................................................... Mimeoma Casey

– Clypeus with apex narrowly parabolic (Fig. 10). Mentum with apex deeply emarginated, surface with furrow in apical third. Base of pronotum without marginal bead ............................................................ Ancognatha Erichson

5. Clypeus trapezoidal or subtrapezoidal. Anterior margin of pronotum weakly produced anteriorly at middle (Fig. 11).......................... Dyscinetus Harold

– Clypeus quadrate,rectangular or parabolic. Anterior margin of pronotum not produced anteriorly at middle.................................................................... 6

6. Clypeus with sides usually divergent from base, apex broadly rounded (Fig. 12). Maxilla without teeth (except for Aspidolea fuliginea ) ............ Aspidolea Bates

– Clypeus with sides parallel or convergent from base, apex rounded, truncate or emarginate. Maxilla with visible teeth .................................................... 7

7. Clypeus with sides convergent, apex rounded, parabolic or emarginated (Fig. 13). Males with protarsus enlarged...................... Cyclocephala Dejean

– Clypeus subquadrate, sides weakly converging, apex truncate or emarginate. Males with protarsus simple not enlarged................... Erioscelis Burmeister

Figures

Figure 9. Head of Mimeoma sp. (scale bar: 2 mm). (Figure taken from Ratcliffe 2003).