Quadrus difficilis (Weeks, 1901);  Comments: Chiapas, Guianas and upper Amazon TL: Bolivia.

Quadrus difficilis (genitalia of Pythonides paterculus f. deflorata Draudt, 1922) ♂ Genitalia of the lectotype. Image from: Mielke, 1993. Revta bras. Ent. 37: 611-638   —   © Olaf H. H. Mielke