Agelenids of the World

Systematics and Taxonomy of Agelenidae, a Worldwide distributed Spider Family

Systematics and natural history of Barronopsis (Araneae: Agelenidae), with description of a new species

Publication Type:Journal Article
Year of Publication:2009
Authors:I. C. Stocks
Date Published:2009
ISBN Number:1175-5326
Keywords:[Genitalia / / ] [Life cycle / Phenology / ] [Phylogeny / Cladistics /, ] [Habitat preference / / ]., Barronopsis - Chamberlin & Ivie 1941 (Araneae): [Revision, P. 10, Barronopsis [General morphology / Morphological characters / ], Barronopsis barrowsi - (Gertsch 1934) (Araneae): [Syn nov, Barronopsis, Barronopsis jeffersi - (Muma 1945) (Araneae): [Syn nov, Barronopsis, Barronopsis stephaniae (Araneae): [Sp nov, South Carolina, P. 35]., Barronopsis stephaniae [South Carolina / / New species]., campephila Alayon 1993, p. 34]., cesari Alayon 1993, p. 22]., Development, Ecology, Evolution, General, Habitat utilization, Key, Key to, Land zones, Life cycle and, Morphology, Nearctic region, New taxa, Nomenclature, North America, Reproduction, Reproductive system, species, P. 16]., Synonymy, Systematics, Taxonomy, USA

The monophyletic agelenid genus Barronopsis Chamberlin & Ivie is revised to include 6 species. The Cuban species B. campephila Alayon and B. cesari Alayon are synonomized under B. barrowsi (Gertsch) and B. jeffersi (Muma), respectively, and B. stephaniae new species is described. Natural history observations, distribution maps, diagnoses and descriptions, and a species identification key including B. texana (Gertsch), B. arturoi Alayon, and B. floridensis (Muma) are provided. Detailed descriptions of the male palpus and female genitalia, a review and evaluation of historical terminology used to describe agelenid palpal bulbs, and a discussion of the utility of certain male palpal characters in resolving phylogeny within Agelenidae are provided. Based on the morphology of the male and female genitalia and morphometric data, two species groups are recognized: a large-bodied B. texana species group (B. texana, floridensis, arturoi, jeffersi) and a small-bodied B. barrowsi species group (B. barrowsi, B. stephaniae). A cladistic analysis of Barronopsis, using Tortolena glaucopis (F. O. P.-Cambridge), Melpomene singula (Gertsch & Ivie), and species of Agelenopsis Giebel as outgroups identified three most parsimonious trees of 37 steps. The strict consensus tree yielded the following species relationships: (Agelenopsis (((B. texana, B. jeffersi), B. floridensis, B. arturoi), (B. barrowsi, B. stephaniae))))).

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