........Megasoma gyas (Herbst, 1775)
........syn. Scarabaeus esau Herbst, 1785
........syn. Scarabaeus typhon Olivier, 1789
........syn. Scarabaeus langier Olivier, 1789
........syn. Scarabaeus entellus Olivier, 1792
........syn. Scarabaeus monoceros Weber, 1801
........syn. Megasoma enema Marcgraf, 1848
........syn. Megasoma gyas rumbucheri Fischer, 1968
........syn. Megasoma gyas porioni Nagai, 2003

Megasoma gyas (Herbst, 1775) male, dorsal view	Megasoma gyas (Herbst, 1775) female, dorsal view

male, lateral view

female, lateral view Photos by Matthew R. Moore

Distribution: Brazil

Diagnosis: Males with elytra and pronotum velutinous; females with elytra apically velutinous. Males with anterior tibiae straight. Mid-prothoracic horn narrowly emarginate at apex. Anterior angles of pronotum produced into elongate, acute horns. Females with pronotum rugose. Scutellum at base finely punctate. Pronotum with longitudinal, posteromedian carina.

Biological Data: Unknown

Temporal Distribution: The few specimens examined exhibited date ranges in May.

Larvae: Not described