AN ANNOTATED KEY TO DROSOPHILID GENERA WITH BARE OR MICROPUBESCENT ARISTAE AND A REVISION OF PARACACOXENUS (DIPTERA: DROSOPHILIDAE)

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Abstract
The world genera (15 in all) of Drosophilidae with bare (i.e., non-plumose) aristae are brought together, and a key is provided for identifying them. Notes are provided in the key on type species, synonymy, numbers and distributions of included species, and pertinent literature. The genus Paracacoxenus Hardy is revised to include not only its one Nearctic species, guttatus Hardy and Wheeler, but also three European species that were originally assigned to Cacoxenus Loew, i.e., argyreator (Frey), exiguus (Duda), and inquilinus (Hendel). Lectotypes are designated for Cacoxenus punctatus Duda (a junior synonym of Gitonides perspicax Knab), for Gitona vlasovi Duda, for Paracacoxenus argyreator (Frey), and for P. exiguus (Duda). The paper includes 30 figures.