Wulfila xilitlensis spec. nov.

Figures 4–5

Type material: Holotype ♀: MEXICO: San Luis Potosí: Xilitla, Xilitla City near Las Pozas (21°23’50’’N, 98°59’38’’W, 685 m). Nov. 14–18, 2011, R. S. González-Contreras leg. (CNAN-T01349).

Etymology: The species epithet is a latinized derivation of the type locality.

Diagnosis: Wulfila xilitlensis spec. nov. differs from W. albus (Brescovit 1997a: figs 20–21) by having small accessory bulbs (AB) on the Cd anterior to the spermatheca, and having S as wide as the Cd (Figs 4e; 5 a–b); and from W. luisi spec. nov. by having shorter AB directed posteriorly instead of ventrally (Figs 5 a–b; 8e–f).

Description: Male. Unknown. Female: Total length 5.0. Cephalothorax: length 2.0; width 1.50. Carapace glabrous, without pattern, thoracic groove very difficult to see (Fig. 4a). Sternum glossy, color pale yellow. Precoxal triangles present, more visible on coxae III–IV sightly reddish (Fig. 4c). Endites same color as sternum, labium light brown, longer than wide, labium length ca. 1/2 of endites. Chelicera: width 0.30, length 0.77, color similar to the cephalic region, five promarginal and eight retromarginal teeth; fang length 0.35. Eyes: AER straight, PER straight in dorsal view (Fig. 4a); ALE almost twice as big as AME; posterior eyes subequal. Clypeus about 1.5 diameter of AME. Abdomen:pale yellow, slightly darker near the spinnerets; dorsal surface without markings; lateral surface with one longitudinal dark mark near epigastric furrow (Fig. 4b); ventral surface with two darker spots, one posteri- or to the epigastric furrow and another anterior to the tracheal spiracle (Fig. 4c). Legs: light yellow, leg I and II with several pairs of ventral macrosetae on tibiae (10 and 7, respectively) and metatarsi (8 and 5, respectively); length: I 14.25; II 9.73; III 6.27; IV 10.65; formula I–IV–II–III. Pedipalp length 3.10. Epigyne red, with semi-transparent cuticle (Fig. 4d). Vulva: Cd as long and almost as wide as the S with a small AB before entering the spermatheca. Fd long and narrow, projecting anteriorly (Fig. 4e; 5a, b).

Distribution: Known only from the type locality (Fig. 15a).

Biology: The specimen was collected directly from the vegetation in a tropical forest remnant