Phonotimpus xilitla sp. nov. Figures 260–262, 307–310 Type material. Female holotype from dung trap taken at a tropical forest [elev. 762 m], at Xilitla, San Luis Potosí, Mexico (July 18, 1970; A. Newton), deposited in MCZ (63207). Etymology. The specific name is a noun in apposition taken from the type locality. Diagnosis. Females resemble those of P. pozas sp. nov. in carapace color pattern (Fig. 307) and epigynum with a narrow, median, longitudinal groove (Fig. 260) but the second portion of copulatory ducts are obliquely oriented, V-shaped, and the primary spermathecae are widely separated posteriorly and not curved (Figs 261–262). Description. Male: Unknown. Female (holotype): Total length 1.85. Carapace yellow, with pale brown maculations scattered everywhere except on two elongated yellow bands behind posterior eyes, pars thoracica gradually sloping, pars cephalica gently rounded; sternum, mouthparts yellow, cheliceral paturon bristles broken off, base of only one detectable, abdomen narrow, dorsum in bad condition, color pattern not visible, sides light gray, with longitudinal rows of white spots, abdominal scutum small, triangular, covering cardiac area only, venter white, unmarked (Figs 307– 310). Most legs missing, only one leg II, one leg IV present. Leg spination: femur II p0-0-1; tibia II v4-4-2; metatarsus II v3-2-2. Epigynum long, with a longitudinal, median groove encompassing the copulatory opening and first part of copulatory ducts, which are directed posteriorly, then second part obliquely divergent, V-shaped; long, tube-shaped bursae, lateral to median groove; elongated primary spermathecae, about one-half of bursae length, lateral to copulatory ducts, widely separated, distally touching posterior epigynal margin (Figs 260–262). Distribution. Known only from the Municipio de Xilitla in southeastern San Luis Potosí (Fig. 339).

Published as part of Platnick, Norman I., Chamé-Vázquez, David & Ibarra-Núñez, Guillermo, 2022, The guardstone spiders of the genus Phonotimpus Gertsch & Davis (Araneae: Phrurolithidae) from northeastern Mexico, pp. 1-48 in Zootaxa 5219 (1) on page 38, DOI: 10.11646/zootaxa.5219.1.1, http://zenodo.org/record/7408179