Additions and changes in the taxonomy of mosquitoes from 1978 through 1983 are documented with the pertinent literature citations. During this five year period there were descriptions of one new genus, two new subgenera and 75 new species or subspecies. Two subgenera were elevated to generic status, 3 subgenera and 18 species or subspecies were removed form synonymy. The status of 87 taxa, including synonyms, were changed by transfers in generic or subgeneric status.