Dynastinae

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 : 156

Key to the tribes of adult Dynastinae of Colombia

1. Mentum widened or expanded, covering bases of labial palpi. Body more or less dorsoventrally flattened.......................................................... Phileurini

– Mentum narrow, not covering bases of labial palpi. Body not dorsoventrally flattened..................................................................................................... 2

2. Head and pronotum convex, without horns, tubercles or fovea in both sexes, or with inconspicuous tubercles posterior to frontoclypeal suture. Males in many species with front claws enlarged. Tarsomeres of all legs usually long and cylindrical ..................................................................... Cyclocephalini

– Head and/or pronotum with horns, tubercles or fovea. Males with front claws of variable size, enlarged or not. Protarsomeres and mesotarsomeres usually short and triangular ................................................................................... 3

3. Protarsus in males longer than protibiae. Metatarsal segments usually cylindrical, basal segment with strong apical spur ................................ Dynastini

– Protarsus in males shorter than or subequal the same size to protibiae. Metatarsal segments triangularly expanded, basal segment variable in form........ 4

4. Elytra tomentose or irregularly punctate. Punctures slightly impressed. Body slightly dorsoventrally flattened............................................. Agaocephalini

– Elytra smooth or with punctures usually in distinct rows (except for some Heterogomphus species). Punctures strongly or moderate impressed. Body not dorsoventrally flattened.............................................................................. 5

5. Apex of metatibia truncate or smooth (Fig 1). Sexual dimorphism usually not well-pronounced..................................................................... Pentodontini

– Apex of metatibia usually strongly crenulate or with distinct teeth ( Fig 2 ) (except for Coelosis species). Sexual dimorphism usually pronounced.... Oryctini

Figures

Figure 2. Metatibia of Heterogomphus schoenherri Burmeister (scale bar: 5 mm).