Six new species of the spider genus Centroctenus Mello-Leitão from the Neotropical region (Ctenidae, Cteninae)

Abstract

The species of the genus Centroctenus can be distinguished from other Ctenidae genera by the presence of a long tibiae and the absence of a retrolateral projection of the cymbium in the male palp, and by the presence of a rounded spermathecae in the female epigynum. The composition of this spider genus is herein expanded to eleven Neotropical species, with the description of six new species: Centroctenus dourados sp. n., C. claudia sp. n., C. chalkidisi sp. n., and C. varzea sp. n., from Brazil; and Centroctenus coloso sp. n. from Colombia and Centroctenus alinahui sp. n. from Ecuador. A map with the distribution of all known species in the genus is presented.

Molecular phylogeny of the tropical wandering spiders (Araneae, Ctenidae) and the evolution of eye conformation in the RTA clade

“…nov. 1, 2 and 3, Centroctenus varzea Brescovit et al., 2020; and (2) Ctenus inaja Höfer et al. 1994, Centroctenus claudia Brescovit et al., 2020 and Centroctenus alluhini Brescovit et al., 2020. The Nearctic ctenid species that have been described in Ctenus and Leptoctenus L. Koch, 1878 were highly supported as monophyletic.…”

“…Two remaining strongly supported independent clades include: (1) Ctenus maculisternis Strand, 1909, Centroctenus sp. nov. 1, 2 and 3, Centroctenus varzea Brescovit et al., 2020; and (2) Ctenus inaja Höfer et al. 1994, Centroctenus claudia Brescovit et al., 2020 and Centroctenus alluhini Brescovit et al., 2020.…”

“…Recently, Brescovit et al. (2020) described six new Centroctenus species and updated the genus diagnosis. Based on a morphological phylogeny, Polotow and Brescovit (2009a) and Polotow and Brescovit (2009b) described the monotypic genus Parabatinga to accommodate the species Ctenus brevipes Keyserling, 1891 that was placed as sister to Isoctenus .…”

“…auberti Brescovit, 1996; Ce. chalkidisi Brescovit et al., 2020, Ce. coloso Brescovit et al., 2020, Ce.…”

“…Habitus of Ctenidae species of the subfamily Cteninae. (a) Centroctenus varzea Brescovit et al., 2020, female from Iquitos, Peru; (b) Phoneutria fera Perty, 1833, female from Yasuní National Park, Ecuador; (c) Ctenus datus Strand, 1909, female from Gamboa, Panama; (d) Centroctenus alinahui Brescovit et al., 2020, female from Putumayo, Colombia; (e) Spinoctenus flammigerus Hazzi et al., 2018, female from Barbacoas, Colombia; (f) Kiekie griswoldi Polotow & Brescovit, 2018, female from Las Alturas Station, Costa Rica. Photos: N. Hazzi (a, c, d, e, f); G. Hormiga (b).…”