Two new idoteid isopods from Baja California and the Gulf of California ( Mexico) and an analysis of the evolutionary history the genus Colidotea (Crustacea: Isopoda: Idoteidae).

Abstract

Describes Colidotea wallersteini n.sp. and Synidotea francesae n.sp. (Crustacea: Valvifera: Idoteidae: Idoteinae). The genus Colidotea is rediagnosed, a key to the known species presented, and its evolution and historical biogeography described. Both trans-oceanic dispersal and vicariance phenomona appear to have played roles in the establishment of modern distributional patterns of Colidotea.-from Author