The caddisfly genus Triaenodes in the Neotropics (Trichoptera: Leptoceridae) Author Holzenthal, Ralph W. Department of Entomology, University of Minnesota, 1980 Folwell Ave., Room 219, St. Paul, Minnesota, 55108, U. S. A. (holze 001 @ umn. edu) Museum of Zoology, University of Bergen, Muséplass 3, N- 5007 Bergen, Norway (trond. andersen @ zmb. uib. no) Author Contents, Trond Andersen Table Of text Zootaxa 2004 2004-05-14 511 1 1 80 https://biotaxa.org/Zootaxa/article/view/zootaxa.511.1.1 journal article 4064 10.11646/zootaxa.511.1.1 d9f10a58-d4f7-4a74-900a-d5f2e041d181 1175­5334 5030215 Triaenodes abruptus Flint Fig. 5 Triaenodes abruptus Flint, 1991: 96 [ Type locality: Colombia , Dpto Antioquia , Quebrada La Ayura , Envigado (trap B); NMNH; male]. Triaenodes abruptus is a member of the large group of species that possess an apicoventral projection on the inferior appendage, but it is the only species in that group that has a short, conical dorsomesal process of tergum X. It can be further distinguished by the rounded apex of tergum X when viewed dorsally. Adult. Male (n=1). Forewing length 6.2 mm , hind wing length 5.3 mm . Eye 0.39 mm wide. Antennal scape 0.43 mm long. Maxillary palp segment lengths (in mm): 0.29, 0.35, 0.43, 0.21, 0.45. Forewing pale yellow, denuded. Male genitalia. Abdominal segment IX anterior margin broadly rounded; pleural region membranous, setose; tergum IX, in dorsal view, with posteromesal margin indistinct, dorsomesal papillae not evident; sternum IX in lateral view with posterior margin sinuate. Preanal appendage setose, about as long as wide, constricted basally, apex subacute. Dorsomesal process of tergum X conical, originating basally, short, with apical setae; tergum X, in dorsal view, with lateral margins broadly rounded, apex rounded; in lateral view, triangular, tapering to apex, apicolateral margins with microtrichia. Inferior appendage subquadrangular basally, setose, with long, tapering, apicoventral projection; recurved process gradually downturned, narrow, tapering throughout length, apex attenuate; apicomesal lobe heavily setose, elongate, narrow, parallel sided. Phallobase small, triangular, endothecal membranes prominent, highly convoluted, with pair of parameres, parameres subequal, long, straight, tapering; phalicata troughlike, gently curved, narrow throughout length, apex mucronate, phallotremal sclerite not evident. Material examined. COLOMBIA : Antioquia : Mun. Envigado, Quebrada La Ayura , 1750 m , 16.viii.1983 , U Matthias — 1 male ( paratype , NMNH ) . Distribution. Colombia .