Phylogenetic relationships of the comb-footed spider subfamily Spintharinae (Araneae, Araneoidea, Theridiidae), with generic diagnoses and a key to the genera
Por:
Durán-Barrón C.G., Rosas M.V., Contreras-Ramos A.
Publicada:
30 may 2013
Resumen:
The monophyly of Spintharinae is supported in agreement with previous
analysis of Theridiidae by Agnarsson and Arnedo et al. We study the
relationships of the genera within Spintharinae. Fourteen species in the
genera Chrosiothes, Episinus, Spintharus, Stemmops, and Thwaitesia
constituted the ingroup, while five species from the genera Euryopis and
Dipoena (Hadrotarsinae), as well as Latrodectus and Steatoda
(Latrodectinae), served as outgroup taxa. The character matrix included
49 morphological characters. Parsimony analyses using several character
weighting strategies supported the monophyly of Spintharinae with
Stemmops as sister to a clade that includes the remaining ingroup taxa.
Chrosiothes emerged as sister to Episinus + Spintharus + Thwaitesia
which formed a polytomy. The equally weighted, successive weighted, and
preferred implied weight topologies, were all logically consistent. A
key to the genera of Spintharinae and diagnoses for each genus are
given.
Filiaciones:
Durán-Barrón C.G.:
Univ Nacl Autonoma Mexico, Inst Biol, Dept Zool, Mexico City 04510, DF, Mexico
Rosas M.V.:
Instituto Profesional de la Región Sur, Campus Sur, Universidad Autónoma del Estado de Morelos, Jojutla, Morelos 62900, Mexico
Contreras-Ramos A.:
Univ Nacl Autonoma Mexico, Inst Biol, Dept Zool, Mexico City 04510, DF, Mexico
|