Paramexiweckelia, new genus, is described from a groundwater outlet in Cohauila, Mexico. The type-species, by monotypy, is Mexiweckelia particeps Holsinger. Based on the number of its plesiomorphic (ancestral) characters, this genus is the most primitive member of the family Hadziidae from the North American mainland.
Holsinger, John R..
Paramexiweckelia, a new genus of subterranean amphipod crustacean (Hadziidae) from Northern Mexico.
International Journal of Speleology,
Available at: http://scholarcommons.usf.edu/ijs/vol12/iss1/4