Revision of the Neotropical caddisfly genus Itauara Müller, 1888 (Trichoptera, Glossosomatidae)

Systematics of the genus Itauara Müller, 1888 are reviewed. A generic diagnosis, illustrations, and descriptions are provided for males. The genus can be identified by several features of the male genitalia including an extremely reduced phallobase and a phallic apparatus that consists of a sclerotized dorsal sheath covering a very membranous ventral portion. A total 18 species are described as new: Itauara alexanderi, sp. n. (Brazil), I. bidentata, sp. n. (Guyana), I. blahniki, sp. n. (Brazil), I. charlotta, sp. n. (Brazil), I. emilia, sp. n. (Brazil), I. flinti, sp. n. (Brazil), I. guyanensis, sp. n. (Guyana), I. jamesii, sp. n. (Brazil), I. julia, sp. n. (Brazil), I. lucinda, sp. n. (Brazil), I. ovis, sp. n. (Guyana, Venezuela), I. peruensis, sp. n. (Peru), I. rodmani, sp. n. (Brazil), I. simplex, sp. n. (Brazil), I. spiralis, sp. n. (Guyana), I. stella, sp. n. (Brazil), I. tusci, sp. n. (Brazil), and I. unidentata, sp. n. (Guyana). These additions bring the total fauna of Itauara to 22 species.