title: Kankuamo, a new theraphosid genus from Colombia (Araneae, Mygalomorphae), with a new type of urticating setae and divergent male genitalia.
abstract: A new monotypic Theraphosidae genus, Kankuamo Perafán, Galvis & Pérez-Miles, gen. n., is described from Colombia, with a new type of urticating setae. These setae differ from others principally by having a small distal oval patch of lanceolate reversed barbs. Males of Kankuamo gen. n. additionally differ by having a palpal bulb organ very divergent from all known species, with many conspicuous keels dispersed across the median tegulum to the tip, mostly with serrated edges. Females differ by having spermathecae with a single notched receptacle, with two granulated lobes and several irregular sclerotized longitudinal striations. The new urticating setae, type VII, is characterized, illustrated and its releasing mechanism is discussed. It is hypothesized that these setae are the first in Theraphosinae subfamily whose release mechanism is by direct contact. Kankuamo gen. n. is described and illustrated on the basis of the type species Kankuamo marquezi Perafán, Galvis & Gutiérrez, sp. n., and their remarkable characteristics, morphological affinities and cladistic relationship are analyzed.
authors.affiliation: Sección Entomología, Facultad de Ciencias, Universidad de La República, Iguá 4225, Montevideo, Uruguay.+57-3143188819.
authors.forename: Carlos
authors.initials: C
authors.lastname: Perafán
authors.affiliation: Laboratorio de Aracnología & Miriapodología, Instituto de Ciencias Naturales, Departamento de Biología, Universidad Nacional de Colombia, Bogotá, Colombia.
authors.forename: William
authors.initials: W
authors.lastname: Galvis
authors.affiliation: Ecología y Biodiversidad en Ecosistemas Tropicales (EBET), Facultad de Ciencias Básicas, Universidad de La Guajira, Riohacha, Colombia.
authors.forename: Miguel
authors.initials: M
authors.lastname: Gutiérrez
authors.affiliation: Sección Entomología, Facultad de Ciencias, Universidad de La República, Iguá 4225, Montevideo, Uruguay.+57-3143188819.
authors.forename: Fernando
authors.initials: F
authors.lastname: Pérez-Miles
keywords: New species; Sierra Nevada de Santa Marta; Theraphosinae phylogeny; urticating setae type VII