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ABSTRACT Paramycodrosophila Duda, 1924 is a small cosmopolitan genus which encompasses 16 described species. In the Neotropical region there are records of only two species, P. costaricana Duda, 1925 and P. nephelea Wheeler, 1968. In this paper, we describe the first 19 new species from South America – P. itatiaiensis n. sp., P. blauthae n. sp., P. rafaeli n. sp., P. boldrinii n. sp., P. roraimensis n. sp., P. amazonensis n. sp., P. moratoi n. sp., P. mineira n. sp., P. leonensis n. sp., P. marinhoi n. sp., P. viscondedemauaensis n. sp., P. pedraseladensis n. sp., P. vicenziae n. sp., P. pallidifacies n. sp., P. acreensis n. sp., P. mantiqueira n. sp., P. maculosa n. sp., P. melana n. sp., P. puri n. sp. – based on morphological traits. A distribution map and a taxonomic key for male imagoes of the Neotropical species was also produced. By adding 19 new species, we establish the Neotropical region as the biogeographical region with the most known diversity in the world for the genus.

ABSTRACT Hirtodrosophila Duda, 1923 is a worldwide genus that encompasses about 170 species. In the Neotropical Region there are records of 38 species. In this paper, we describe three new species of Neotropical Hirtodrosophila - H. pilosa n. sp., H. fluminensis n. sp. and H. brasiliensis n. sp. -, which are not assigned to any species group. The three new species can be easily distinguished from any known American species by their external morphological traits. Furthermore, we describe a female specimen, refraining from designating it as a new species because of the lack of characteristics to adequately delimit the species.