Key to the genera of Dynastinae in Cuba 1. Mentum strongly expanded, covering bases of labial palpi. Body usually flattened (Phileurini) ............................... 2 - Mentum not expanded, not covering bases of labial palpi. Body not strongly flattened ............................................. 5 2. Body strongly flattened. Elytra distinctly dilated laterally towards apices ..............................Planophileurus Chapin - Body not strongly flattened. Elytra not noticeably dilated .......................................................................................... 3 3. Apex of metatibia with 3 large teeth. Tubercles or horns of frons located at sides of head ...... Homophileurus Kolbe - Apex of metatibia with 1–2 large teeth. Tubercles or horns located on sides of head or not ...................................... 4 4. Tubercles or horns of frons located nearer center of head, far from lateral edge. Pronotum lacking fovea or anterior declivity; longitudinal furrow variable, usually lacking 2 small tubercles at anterior end .......... Hemiphileurus Kolbe - Tubercles or horns located near lateral margin of head. Pronotum with anterior, foveate cavity or broad declivity; longitudinal furrow strong, usually with 2 distinct tubercles at anterior end .................................. Phileurus Latreille 5. Head and pronotum lacking tubercles, horns, carinae, or fovea. Claw with onychium bisetose (Cyclocephalini) .... 6 - Head and/or pronotum (whether males or females) with distinct tubercles, horns, carinae, or fovea. Claw with ony- chium bisetose to multisetose ...................................................................................................................................... 9 6. Clypeus with apex distinctly pointed or narrowly parabolic ............................................................... Mimeoma Casey - Clypeus with apex rounded, truncate, or emarginate but not distinctly pointed or narrowly parabolic ...................... 7 7. Clypeus transversely subtrapezoidal to trapezoidal in shape ........................................................... Dyscinetus Harold - Clypeus with apex rounded, truncate, subquadrate or emarginate ............................................................................... 8 8. Propygidium with long setae extending from beneath elytral apices ............................................... Chalepides Casey - Propygidium lacking long setae extending from beneath elytral apices ...................................... Cyclocephala Dejean 9. Apex of metatibia with distinct teeth. Sexual dimorphism usually distinct (Oryctini). Protibia quadridentate ............ .............................................................................................................................................................. Strategus Kirby - Apex of metatibia usually truncate. Sexual dimorphism usually not well pronounced (Pentodontini). Protibia triden- tate............................................................................................................................................................................... 10 10. Mandibles with 2–3 teeth. Elytra with rows of punctures. ............................................................... Tomarus Erichson - Mandibles entire, lacking teeth. Elytra smooth except for sutural stria ....................... Gorditus Ratcliffe, new genus

Published as part of Ratcliffe, Brett C., 2010, Gorditus rotundus, a new genus and species of Pentodontini from Cuba (Coleoptera: Scarabaeidae: Dynastinae), pp. 56-60 in Zootaxa 2683 on page 57, DOI: 10.5281/zenodo.199376