Premium
Phylogenetic revision of the spider genus Negayan (Araneae, Anyphaenidae, Amaurobioidinae)
Author(s) -
Lopardo Lara
Publication year - 2005
Publication title -
zoologica scripta
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.204
H-Index - 64
eISSN - 1463-6409
pISSN - 0300-3256
DOI - 10.1111/j.1463-6409.2005.00194.x
Subject(s) - biology , monophyly , spermatheca , sister group , zoology , cladistics , genus , taxon , phylogenetic tree , spider , taxonomy (biology) , millipede , clade , ecology , botany , biochemistry , gene , sperm
A taxonomic revision and phylogenetic analysis of the spider genus Negayan Ramírez, 2003 (Anyphaenidae, Amaurobioidinae, Amaurobioidini) is presented. All 12 known species of Negayan plus representatives of each of the other nine amaurobioidini genera (25 taxa in total) were scored for 134 morphological characters. The cladistic analysis of this matrix results in a single most parsimonious tree (LE = 382; CI = 0.42; CI for informative characters = 0.36; RI = 0.49). The monophyly of Negayan is corroborated, although with low support values. My results correspond to those of a previous study, with N. paduana as the basal species of the genus and Selknamia as the sister‐group of Negayan . Negayan is diagnosed by the genitalic morphology in both sexes. Males of Negayan have a characteristic retrolateral tibial apophysis on palps that is long, thick and sinuous at the tip. Females of Negayan have a characteristic genitalic pattern with coiled copulatory ducts and contiguous spermathecae. New diagnostic characters are proposed. The genus Negayan comprises 12 species, four of them known only from females. It is known from Argentina, Chile and Peru. Eight new species are described here: N. puno sp. nov., N. cerronegro sp. nov., N. tata sp. nov., N. ancha sp. nov., N. enrollada sp. nov., N. tucuman sp. nov., N. tarapaca sp. nov., and N. argentina sp. nov. New morphological data are added to the descriptions of N. tridentata (Simon), N. paduana (Karsch) and N. coccinea (Mello‐Leitão). The male of N. excepta (Tullgren) is described for the first time and the female is redescribed. Negayan tridentata is a senior synonym of Gayenna exigua (Mello‐Leitão); and N. paduana is a senior synonym of Tomopisthes lebruni (Simon).