Megacephalina
Guides
Tetracha
metallic tiger beetles
Tetracha is a genus of metallic tiger beetles in the subtribe Megacephalina, closely related to Megacephala. The genus was resurrected by Huber (1994) after nearly a century of being treated as a subgenus of Megacephala, and subsequently elevated to full generic status by Naviaux (2007). Species occur primarily in the Western Hemisphere from southern Mexico through Central America, northern South America, and the West Indies. Members are characterized by crepuscular and nocturnal activity patterns, metallic coloration, and relatively large eyes adapted for low-light vision.