Vaejovis darwini Santibáñez-López & Francke, 2010 Figures 4, 13d, 14c, 15d, 16d, 17d, 18d, 19d, 22 Vaejovis darwini Santibáñez-López & Francke, 2010: 556 –559, 567–570, Fig: 37–43, 54. Type material. Holotype male. MEXICO: Oaxaca, Distrito de Juquila, San Pedro Juchatengo, 3 km. W (N 16.35°, W 97.1°, elev. 845 m). VI-27-2006. Cols.: O. Francke, G. Villegas, H. Montaño, C. Santibáñez and A. Valdez. CNAN-T0389. Examined. Paratypes: 1 ♂ and 1 ♀, same data as holotype (CNAN-T0389); Examined. 1 ♂ and 1 ♀, same data as holotype (AMNH). Examined. Diagnosis (modified from Santibáñez-López & Francke, 2010): Small scorpions, adults 23–26 mm long (Fig: 22-a, b). Carapace (Fig: 13-d), shorter than metasomal segment V (Carapace L/MS-V 0.85±0.01 [0.86]), longer than the femur (Carapace L/Femur L 1.19±0.08 [1.3]); with anterior margin slightly concave. Mesosomal tergite VII with two median carinae, noticeably granular; beginning on second third of segment, composed by a single line of granules. Pectinal teeth 17–17 [15–16]; metasomal sternite V on males with a diffuse posterior, whitish patch almost absent; sternite VII with a pair of feeble carinae only present on medial third of segment and 11–12 setae. Metasomal segment I slightly wider than long, almost square in dorsal view (MSI L/ W 0.83 ±0.02 [0.85]); intercarinal spaces on segments I–IV sparsely granular; segment V thin, conspicuously longer than wide (MS-V L/ W 2.5 ±0.24 [2.81]) and as wide as deep (W/D 1±0.07 [1]). Vesicle long and rounded (Fig: 14-d) (L/ W 1.83 ±0.03 [1.5]) and broad, slightly wider than deep (W/D 1.19± 0.03 [1.33]), ventrally with two light-colored longitudinal median bands, conspicuously depressed; vesicle with ventral surface granular; dorsal surface flat with a tiny circle on posterior half representing the vesicular gland. Pedipalp femur (Fig: 15-d) more than three times longer than wide on males, slightly shorter on females (L/ W 3.29 ±0.04 [2.72]); wider than deep (W/D 1.4±0.2 [1.37]). Pedipalp patella (Fig: 16-d) more than three times longer than wide in both sexes (L/ W 3.3 ±0.03 [3.16]); wider than deep (W/D 1.36 ±0.14 [1.2]), with dorsointernal carina granulated. Pedipalp chela manus two times longer than wide (Fig: 17, 18-d)(L/ W 1.97 ±0.11 [2.06]), slightly deeper than wide (W/D 0.94±0.06 [0.88]); the dorsal prosubmedian carina granulated; fixed finger shorter than chela manus (CM L/FF 1.25±0.06 [1.2]). Dentate margins of fingers straight. Hemispermatophore (Fig: 19-d): Lamelliform (measurements: TL 2.5; LL 1.7; W 0.4); capsular region with median lobe sclerotized, two basal hooks lobed. Full morphometric variation is given in tables 13 and 14. Setae variation is given in tables 9–12. Distribution. Oaxaca, México. This species is known only from the type locality (Figure 4). Natural history. This species inhabits the rocky slopes along a disturbed riparian community at 845 m elevation.

Published as part of A, Contreras-Félix Gerardo & Oscar, Francke B., 2019, Taxonomic revision of the " mexicanus " group of the genus Vaejovis C. L. Koch, 1836 (Scorpiones: Vaejovidae), pp. 1-100 in Zootaxa 4596 (1) on pages 33-34, DOI: 10.11646/zootaxa.4596.1.1, http://zenodo.org/record/2659091