Dynastinae

Ratcliffe, Brett C., 2010, Gorditus rotundus, a new genus and species of Pentodontini from Cuba (Coleoptera: Scarabaeidae: Dynastinae), Zootaxa 2683, pp. 56-60: 57

publication ID

10.5281/zenodo.199376

persistent identifier

http://treatment.plazi.org/id/160387C8-1D27-D352-FF1A-FD8DFA5BFA40

treatment provided by

Plazi

scientific name

Dynastinae
status

 

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