A REVISION OF THE NEARCTIC GENUS GYMNOCARENA HERING (DIPTERA, TEPHRITIDAE)

The genus Gymnocarena Hering is revised to include 13 Nearctic species: angusta, n. sp., apicata (Thomas), n. comb., bicolor Foote, carinata, n. sp., diffusa (Snow), fusca, n. sp., hernandezi, n. sp., lichtensteinii (Wiedemann), n. comb., magna, n. sp., mexicana (Aczel), mississippiensis, n. sp., serrata, n. sp., and tricolor (Doane). Mylogymnocarena Foote is a new synonym of Gymnocarena, and flava Foote is a new synonym of tricolor. A lectotype is designated for lichtensteinii. New host data are presented for carinata and mexicana, and it is noted that all known hosts of Gymnocarena belong to the tribe Heliantheae (Asteraceae). Cladistic relationships among the species are analyzed, and descriptions, illustrations, and distribution maps for all species, as well as a key, are provided.