Resumen

GARCIA-MADRIGAL, María del Socorro  y  BASTIDA-ZAVALA, José Rolando. Variaciones morfométricas de Pseudothelphusa belliana (Decapoda: Pseudothelphusidae) en Michoacán, México. Rev. biol. trop [online]. 1998, vol.46, n.4, pp.921-927. ISSN 0034-7744.

A total of 37 specimens of the freshwater crab Pseudothelphusa belliana were collected from four new localities in the state of Michoacan. Morphometric variation, specially carapace width (  = 48.7, S.D. = 3.3 for Chucutitán versus   = 33.5, S.D. = 9.1 for the rest of specimens), shape of chela, coloration in vivo, and differences on gonopods of two geographically separate populations, suggest two subspecies or a cryptospecies complex. Diagnosis, habitat and distributional data are also included.

Palabras clave : Cryptospecies complex; Michoacan; morphometric variation; Pseudothelphusa belliana.