Zorocrates potosi, PLATNICK & UBICK, 2007

PLATNICK, NORMAN I. & UBICK, DARRELL, 2007, A Revision of the Spider Genus Zorocrates Simon (Araneae, Zorocratidae), American Museum Novitates 3579, pp. 1-44 : 33

Zorocrates potosi , new species figures 83–87 ; map 4

TYPE: Female holotype taken in the entrance sink of the Cueva de los Viet Cong on the Xilitla Plateau , San Luis Potosı´, Mexico (Apr. 1, 1980; T. Treacy), deposited in AMNH .

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

DIAGNOSIS: The lack of a cribellum separates this species from all others except Z. xilitla , from which it can be distinguished by the smaller median apophysis of males ( fig. 84 ) and the anteriorly wider epigynum of females ( fig. 86 ).

MALE: Total length 11. Coloration as in Z. fuscus . Leg spination: femora: I p0-0-2, r2-0-1; II p0-1-1, r0-2-1; III r1-1-1; IV p2-0-1, r0-0-1; patellae IV r0-1-0; tibiae: I d0-0-0, p0-1-0, v4- 4-2, r0-0-0; II d0-0-0, p0-1-0, v4-4-2, r0-1-0; III r1-0-1; metatarsi: I, II p0-0-0, v2-2-2, r0-0-0; III r1-2-2; IV v3-2-2. Cribellum absent, represented only by small, fleshy, setose colulus. Retrolateral tibial apophysis strong, recurved at tip; median apophysis greatly expanded at midlength by prolaterally directed, sharp projection; tegular apophysis distally bifid ( figs. 83–85 ).

FEMALE: Total length 12. Coloration as in male. Leg spination: femora: I p0-0-2, r0-0-0; II p0-0-1, r0-0-0; III r1-1-1; IV d1-0-1, p2-0-1, r0-0-1; patellae IV r0-1-0; tibiae: I, II d0-0-0, p0-0-0, v4-4-2, r0-0-0; III r1-0-1; metatarsi: I, II p0-0-0, v2-2-2, r0-0-0; III r1-2-2; IV v3-2-2. Cribellum absent, represented only by small, fleshy, setose colulus. Epigynum with narrow, triangular posterolateral sclerotizations, lateral margins of midpiece excavated, accompanied laterally by unsclerotized patches; spermathecae with anteromedially directed lateral ducts ( figs. 86, 87 ).

OTHER MATERIAL EXAMINED: One male and one female taken with the holotype (AMNH).

DISTRIBUTION: Known only from San Luis Potosı´, Mexico (map 4).

Figures

Figs. 83–87. Zorocrates potosi, new species. 83. Left male palp, prolateral view. 84. Same, ventral view.