A review of the genus Umbelligerus is presented with description of two new species from Panama. Descriptions and illustrations of all five known species: U. peruviensis Deitz, U. furcillatus Sakakibara, U. woldai Sakakibara, U. stockwelli Flynn, n. sp., and U. convergens Flynn, n. sp. are presented with key to adults.

Pherbellia anitae Foote, sp. nov., from southeastern Arizona, is described, and the male postabdomen is illustrated.

A new genus, Stevenaltica, with two new species, S. normi and S. erronis, from Bolivia is described and illustrated. It is similar to Exoceras Jacoby. An identification key for all flea beetle genera known to occur in mosses in the Western Hemisphere is provided.

Eighty-nine years after the only known specimen of Dictya disjuncta Orth was collected, in Mississippi in 1921, the species was rediscovered in Indiana, U.S.A. in 2010. A gravid female laid eggs that gave rise to two generations of flies. The egg, three larval stages, puparium, and adult female are described and illustrated for the first time, the life cycle is elucidated, the holotype male is redescribed, and the geographical distribution of the species is depicted.