title: Descriptions of two new genera of the spider family Caponiidae (Arachnida, Araneae) and an update ofTisentnopsandTaintnopsfrom Brazil and Chile.
abstract: New members of the spider family Caponiidae from Brazil and Chile are presented. Three new species in previously known genera are described:Taintnops papososp. n.from Chile, and the BrazilianTisentnops mineirosp. n.andTisentnops onixsp. n., both belonging to a genus known only from its damaged type. Additionally, two new non-nopine Brazilian genera are proposed:Nasutonopsgen. n.including three new species:Nasutonops chapeusp. n.,Nasutonops sincorasp. n.andNasutonops xaxadosp. n.; andCarajasgen. n., known only from the type speciesCarajas parauasp. n.Both new genera have entire, rather than sub-segmented tarsi. Therefore, they are not included in the caponiid subfamily Nopinae.Nasutonopsgen. n.is characterized by the presence of a projected clypeal horn, unique among caponiids. Additionally, the first blind caponiids are described:Tisentnops mineirosp. n.from the state of Minas Gerais andCarajas parauasp. n.from the state of Pará. Both of these species are found only in caves and completely lack eyes.
authors.affiliation: Laboratório Especial de Coleções Zoológicas, Instituto Butantan, Av. Vital Brasil, 1500, Butantã, São Paulo, São Paulo, Brazil, 05503-900.
authors.forename: Antonio D
authors.initials: AD
authors.lastname: Brescovit
authors.affiliation: Laboratório Especial de Coleções Zoológicas, Instituto Butantan, Av. Vital Brasil, 1500, Butantã, São Paulo, São Paulo, Brazil, 05503-900.
authors.forename: Alexander
authors.initials: A
authors.lastname: Sánchez-Ruiz
keywords: Neotropical region; Taxonomy; haplogynae; new genus; new species