title: The male of Megacormusgranosus (Gervais, 1844) with comments on its hemispermatophore (Scorpiones, Euscorpiidae).
abstract: The male of Megacormusgranosus is described for the first time and the female redescribed. A homology scheme proposed recently is applied to hemispermatophore structures. The specimens were collected in an oak forest from Pico de Orizaba Volcano at an average altitude of 2340 m. All adult males were collected by pitfall traps, whereas all adult females and both sex immatures were collected using Berlese funnels, suggesting that males are comparatively more mobile within the leaf litter layer, probably due to mating season.
authors.affiliation: Laboratorio de Aracnología, Departamento de Biología Comparada, Facultad de Ciencias, Universidad Nacional Autónoma de México. Av. Universidad 3000, Circuito Exterior S/N, Delegación Coyoacán, C.P. 04510 Ciudad Universitaria, D.F. México.
authors.forename: Edmundo
authors.initials: E
authors.lastname: González-Santillán
authors.affiliation: Laboratorio de Aracnología, Departamento de Biología Comparada, Facultad de Ciencias, Universidad Nacional Autónoma de México. Av. Universidad 3000, Circuito Exterior S/N, Delegación Coyoacán, C.P. 04510 Ciudad Universitaria, D.F. México.
authors.forename: Fernando
authors.initials: F
authors.lastname: Alvarez-Padilla
keywords: Euscorpiidae; Mexico; Orizaba; Veracruz