Philonthus bicoloristylus Chani-Posse

(Figs. 15, 54, 55)

Diagnosis (based on Chani-Posse 2010). Philonthus bicoloristylus may be identified by the eyes longer than temples and the bicolored styli of tergum 9. It differs from other southern South American species of Philonthus by the antennal segment 10 quadrate, the pronotum about as long as wide, and the dorsal rows of pronotum each with five punctures. Length 8.0–9.0 mm.

Distribution. Argentina (Chani-Posse 2010).

Bionomics. Philonthus bicoloristylus has been found to be a common species in horse and cow droppings in northwestern and eastern Argentina (Chani-Posse 2010).