This paper includes the 21 species (14 new) that are known in the area including Mexico, Central America south to Panama, and the associated islands of the West Indies and the Virgin Islands. It includes 6 species of the subgenus Microurosigalphus, 6 species of the subgenus Bruchiurosigalphus, 5 species of the subgenus Urosigalphus, and 4 species of the subgenus Neourosigalphus. The known biology and range of each species is given as well as complete descriptions and illustrations.