Numbers
4 spp. in 3 genera in our area, 21 genera in the New World
(1)(2)Identification
Appearance distinctive. Typical characteristics:
body somewhat flattened (depressed)
horns or tubercles (small rounded bumps) on head and (often)
pronotum
clypeus rounded, with pointed tip, or small horn
pronotum with deep lengthwise groove in middle
mentum expanded, covering bases of
labial palpi (
Dynastinae key)
rearmost
tibia truncated or digitate (having fingerlike projections) at apex (outermost end)
rearmost
tarsomere 1 with a large spine at apex
Range
worldwide, but mostly tropical; in our area, mostly s. US
(1) (north to IN)
Internet References
McCleve (2007) (carnivorous/predatory habits)