Description of the spider Verita williamsi, a new genus and species from Santa Fe, Argentina (Araneae, Gnaphosidae)

Ramı́rez, Martı́n J.; Grismado, Cristian J.

doi:10.22179/revmacn.17.425

Cited by 1 publication

(2 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The Anzacia group includes gnaphosid genera that resemble Micaria (except Hypodrassodes Dalmas, 1919 and Anzacia Dalmas, 1919) in many aspects, including genital and spinneret morphology (Murphy, ; Ramírez and Grismado, ). The recently described Verita Ramírez and Grismado, was also considered to be related to Micaria and some genera of the Anzacia group, namely Homoeothele Simon, 1908 and Matua Forster, 1979 (Ramírez and Grismado, ). Here, the Anzacia group (represented by Anzacia , Nauhea , Verita and Hypodrassodes ) was found to be polyphyletic and did not appear to be closely related to Micaria (Fig.…”

Section: Discussionmentioning

confidence: 99%

“…These cases are noted in the character list (). Two taxa were scored based only on images (from published studies and from the unpublished Assembling the Tree of Life Spiders database), since specimens were not available at the time of the study: Verita williamsi Ramírez and Grismado, and Trachycosmus sculptilis Simon, . The former was included because it could be important for elucidation of the relationship of some Gnaphosidae taxa (e.g.…”

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Systematics and evolution of ground spiders revisited (Araneae, Dionycha, Gnaphosidae)

2017

View full text Add to dashboard Cite

Gnaphosidae Pocock are a very diverse spider family with remarkable spinning organ morphology. Although the family has received intense taxonomic attention in recent years, its intergeneric relationships remain obscure. A phylogenetic analysis of Gnaphosidae genera was performed to untangle the evolutionary history of the family. A matrix of 324 morphological characters, scored for 71 gnaphosid genera and 29 outgroup taxa, was analysed through parsimony and Bayesian phylogenetic inference. Gnaphosidae are not recovered as a monophyletic group, neither were most of the previously proposed intrafamiliar groupings. In accordance with the phylogenetic results obtained, Vectius Simon and Hemicloea Thorell are transferred to Trochanteriidae, and Xenoplectus Schiapelli & Gerschman de Pikelin to Liocranidae. Micaria Westring, Nauhea Forster and Verita Ram ırez & Grismado (and some related genera) are probably not gnaphosids, although their phylogenetic placement is uncertain. Gnaphosidae s.s. are defined as spiders with enlarged piriform gland spigots, longer and wider than the major ampullate gland spigots. Within Gnaphosidae s.s., well-supported clades allow the redefinition, on the basis of quantitative phylogenetic evidence, of Gnaphosinae Pocock, Zelotinae Platnick, Herpyllinae Platnick, Drassodinae Simon, Prodidominae Simon rank res. and the newly proposed Leptodrassinae subfam. nov. Many genera are not assigned to subfamily given their poorly supported and unstable relationships. The homology and evolution of structures such as the claw tuft clasper, the spinning organs and the modification of cheliceral promargin are discussed.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%