Key to third-instar larvae of New World Oryctini genera

1 Anterior frontal setae absent ......................................................................................................................................... 2

- Anterior frontal setae present....................................................................................................................................... 3

2 Each tarsal claw with 2 setae. Claws long and slender. Laeotorma without apex dilated towards pedium ................... ................................................................................................................................................................ Coelosis Hope

- Each tarsal claw with 4 setae. Claws short and stout. Laeotorma with apex dilated towards pedium........................... .............................................................................................................................................................. Strategus Kirby

3 Abdominal spiracles on segments I–VIII similar in size............................................................................................. 6

- Abdominal spiracles on segments I–VIII different in size .......................................................................................... 4

4 Each tarsal claw with 2 setae ....................................................................................................................................... 5

- Each tarsal claw with 4 setae .............................................................................. Heterogomphus Burmeister (in part).

5 Left mandible with third and fourth incisive teeth entire. Spiracles on abdominal segments VII and VIII smaller than those on preceding segments. Antennomere 4 with 5–9 dorsal sensory spots .... Heterogomphus Burmeister (in part).

- Left mandible with third and fourth incisive teeth notched. Spiracles on abdominal segments VII and VIII larger than those on preceding segments. Antennomere 4 with 10 dorsal sensory spots ............................ Podischnus Burmeister

6 Laeotorma with apex dilated towards pedium. Antennomere 4 with 12 dorsal sensory spots................ Enema Hope

- Laeotorma with apex not dilated. Antennomere 4 with 2–5 dorsal sensory spots ............................... Xyloryctes Hope