TY - JOUR
T1 - Systematics of Cauquenia (Araneae:Zoropsidae), with comments on the patterns of evolution of cribellum and male tibial crack on Lycosoidea
AU - Piacentini, Luis N.
AU - Ramírez, Martín J.
AU - Silva Davila, Diana Fernanda
N1 - Copyright:
Copyright 2013 Elsevier B.V., All rights reserved.
PY - 2013
Y1 - 2013
N2 - A new genus of the spider family Zoropsidae, Cauquenia, gen. nov., is proposed for Cauquenia maule, sp. nov., from the Maule region in central Chile. The familial placement is tested through the inclusion of Cauquenia in the latest major published morphological analyses of the superfamily Lycosoidea, and the subfamily placement of the South American zoropsid genus Itatiaya Mello-Leitão is also tested including them in the Raven and Stumkat (2005) analysis. Cauquenia and Itatiaya are closely related to the African genera Griswoldia Dippenaar-Schoeman & Jocqué and Phanotea Simon, with which it shares a cup-shaped median apophysis on the male pedipalp and tooth-like projections on the lateral lobes of the epigyne in females. The patterns of evolution of the cribellum and the male tibial crack in Lycosoidea are explored; the cribellum shows up as primitively present, with three losses and four independent acquisitions, and the male tibial crack is lost twice. An asymmetric cost in cribellum gain:loss of 6:1 produces a primitive cribellum with 12 losses.
AB - A new genus of the spider family Zoropsidae, Cauquenia, gen. nov., is proposed for Cauquenia maule, sp. nov., from the Maule region in central Chile. The familial placement is tested through the inclusion of Cauquenia in the latest major published morphological analyses of the superfamily Lycosoidea, and the subfamily placement of the South American zoropsid genus Itatiaya Mello-Leitão is also tested including them in the Raven and Stumkat (2005) analysis. Cauquenia and Itatiaya are closely related to the African genera Griswoldia Dippenaar-Schoeman & Jocqué and Phanotea Simon, with which it shares a cup-shaped median apophysis on the male pedipalp and tooth-like projections on the lateral lobes of the epigyne in females. The patterns of evolution of the cribellum and the male tibial crack in Lycosoidea are explored; the cribellum shows up as primitively present, with three losses and four independent acquisitions, and the male tibial crack is lost twice. An asymmetric cost in cribellum gain:loss of 6:1 produces a primitive cribellum with 12 losses.
KW - cladistics
KW - morphology
KW - phylogeny
KW - systematics
KW - taxonomy.
UR - http://www.scopus.com/inward/record.url?scp=84887030301&partnerID=8YFLogxK
U2 - 10.1071/IS13031
DO - 10.1071/IS13031
M3 - Artículo
AN - SCOPUS:84887030301
VL - 27
SP - 567
EP - 577
JO - Invertebrate Systematics
JF - Invertebrate Systematics
SN - 1445-5226
IS - 5
ER -