Monday, April 10, 2017

[Arachnida • 2017] Califorctenus cacachilensis • A New Genus and Species of Cavernicolous Spider (Araneae: Ctenidae: Cteninae) from Mexico


Califorctenus cacachilensis 
 Jiménez, Berrian, Polotow & Palacios-Cardiel, 2017

Sierra Cacachilas Wandering Spider | DOI: 10.11646/zootaxa.4238.1.7 

Abstract

Califorctenus gen. nov. (Araneae: Ctenidae) a new genus and a new species (Califorctenus cacachilensis sp. nov.) from the Baja California Peninsula in Mexico are described and illustrated. Califorctenus gen. nov. can be diagnosed by the morphology of the male palp, with embolus cylindrical and elongated, locking lobes of embolus positioned retrolaterally and the cup-shaped and elongated median apophysis.

Keywords: Araneae, taxonomy, new species, Baja California Sur

Califorctenus cacachilensis sp. nov., Male, dorsal view.   

Califorctenus cacachilensis sp. nov. , Female, dorsal view.      

Califorctenus new genus
Type species. Califorctenus cacachilensis sp. nov. here designated.
Included taxa. Only the type species, Califorctenus cacachilensis sp. nov.

Etymology. The genus name is derived from the combination of “Califor” in reference to the word “California” and “Ctenus”. The gender is masculine.

Diagnosis. Califorctenusgen. nov. resembles species of Amauropelma, Thoriosa and Trogloctenus by the morphology of the epigynum, with laterally elongated median fields that are curved dorsally to form a pocket (Fig. 6B) and basas lateral projections of the epigynum (Fig. 6A). Califorctenusgen. nov. can be distinguished from them by the morphology of the male palp, with embolus cylindrical and elongated, locking lobes of embolus positioned retrolaterally and median apophysis cup-shaped and elongated.

Distribution. Califorctenus gen. nov. is found in México in the state of Baja California Sur.

Califorctenus cacachilensis new species

Holotype. Male: MEXICO: Baja California Sur, Municipality of La Paz, Sierra de las Cacachilas, Los Pisos C. Palacios and J. Maya (CARCIB 0027).

Etymology. The specific name is a noun in apposition taken from the type locality. 

Califorctenus cacachilensis sp. nov., Ocular area, anterior view.      


   
Califorctenus cacachilensis sp. nov.   C. Egg sac. D. Ocular area, anterior view.     


María Luisa Jiménez, James Edwin Berrian, Daniele Polotow, Carlos Palacios-Cardiel. 2017. Description of Califorctenus (Cteninae, Ctenidae, Araneae), A New Spider Genus from Mexico. Zootaxa. 4238(1); 97–108. DOI: 10.11646/zootaxa.4238.1.7

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