Contribution to the Trichoptera fauna of the river La Vieja, Bogotá, Colombia (Insecta: Trichoptera) Author Mey, Wolfram Author Ospina-Torres, Rodulfo text Zootaxa 2018 2018-10-23 4504 1 23 40 journal article 28092 10.11646/zootaxa.4504.1.2 cffb097a-824a-4a4d-9e24-1962e7e14021 1175-5326 2606146 477150EE-9E89-4F03-879D-38D418C2FFEB Marilia bogotaensis spec. nov. ( Figs 12 A–12D, 15F) Holotype ♂ , Colombia , Bogotá , Chapinero , Quebrada La Vieja , 6.ii.2017 , hand net , leg. W. Mey ( ICN ). Paratypes : same data, 2♂ [pinned], 6.ii.2017 , leg. W. Mey ( MfN ) . Etymology. The specific name is derived from Bogotá . Description. Male ( Fig. 15F ). Length of each forewing 9 mm , wing span 19–20 mm . Head brown, frons and vertex densely covered by grey-white hairs; maxillary and labial palpi dark brown, scapes bulbous, with grey-white hairs, antennae nearly twice as long as forewings, dark brown, white-ringed at articulations of flagellomeres, eyes small, widely separated middorsally; forewings with brown veins and grey-white hairs on wing membrane, large brown spot on bifurcation of cubitus and crossvein cu-a ; hindwings white, Cu1a+1b seemingly running onto M3+4, Cu2 and A1 with short, basal stalk, jugum and jugal margins of hindwings with long, thin hairs. Forelegs brown, middle and hind legs yellow-brown, tarsal spines black, spurs 2.4.4. Abdomen grey-brown. Male genitalia ( Figs 12 A–12D): Segment IX in lateral view vertical anteriorly, separated on lateral side into tergum and sternum by broad, pleural sclerite; tergum X straight and membranous dorsally, apicolateral sides sclerotized and folded medioventrad, lateral hooks absent; preanal appendages triangular, somewhat twisted in basal half, nearly as long as tergum X; inferior appendages elongate, each with apical segment small; phallic apparatus with short and slightly curved phallotheca, phallotremal sclerite spatulate in lateral view, U-shaped in ventral view. Female: unknown Diagnosis. The new species shares with M. lateralis Flint 1983 the sclerotized, apicolateral sides of tergum X and the straight inferior appendages. However, preanal appendages and phallic apparatus are of different morphology. Also, the small eyes of the male exclude the species from a closer relationship with M. lateralis , where eyes meet mid-dorsally. Similar genitalia and small eyes are present in M. microps Flint 1991 which was described from Choco and Antioquia , but it does not exhibit triangular preanal appendages, a character which is present in another Colombian species, M. modesta Banks 1913 . The phallic apparatus of the latter species is strongly bent basally and much longer than in the new species.