Pterotricha nadolnyi, Zamani, Alireza, 2018

Zamani, Alireza, 2018, The spider genus Pterotricha Kulczynski, 1903 (Araneae, Gnaphosidae) in the United Arab Emirates, Evolutionary Systematics 2 (2), pp. 151-161 : 151

Pterotricha nadolnyi sp. n. Figs 1d, 2c, 3c, 5 d–e

Holotype.

♂ (AMNH_IZC 00326742), UAE: Madinat Zayed, 23°50'N, 54°6'E, 11 Apr 1994.

Paratypes.

3♂ (AMNH_IZC 00326844), Khatam, 23°53'N, 55°25'E, 15 Apr 1994; 4♂ (AMNH_IZC 00326782), Baynunah, 24°0'N, 55°39'E, 9 May 1994; 4♂ (AMNH_IZC 00326809), Public Hunting Triangle, 24°40'N, 55°3'E, 28 Jan 1994; 2♂ (AMNH_IZC 00326798), Madinat Zayed, 23°51'N, 54°4'E, 11 Apr 1994; 4♂ (AMNH_IZC 00326781), Khatam, 23°52'N, 55°22'E, 15 Apr 1994; 2♂ (AMNH_IZC 00326824), Khatam, 23°53'N, 55°25'E, 15 Apr 1994; 3♂ (AMNH_IZC 00326764), Khatam, 23°52'N, 55°23'E, 15 Apr 1994; 1♂ (AMNH_IZC 00326753), Madinat Zayed, 23°50'N, 54°6'E, 11 Apr 1994; 4♂ (AMNH_IZC 00326819), Khatam, 23°53'N, 55°22'E, 15 Apr 1994; 3♂ (AMNH_IZC 00326743), Baynunah, 24°0'N, 55°39'E, 6 Aug 1994; 1♂ (AMNH_IZC 00326756), Umm Al Zumul, 22°52'N, 55°10'E, 2 Feb 1994, mobile sand.

Etymology.

This species is named after my friend and colleague Anton A. Nadolny (Crimea, Ukraine).

Diagnosis.

This species is similar to Pterotricha chazaliae (Simon, 1895) known from Morocco, Mauritania, Algeria and Israel, by similar shape of conductor, and the tapering terminal part of the embolus (cf. Fig. 2c and fig. 103 in Levy 1995). The two species can be differentiated by the length of the terminal part of the embolus (longer and more tapering in P. chazaliae ), different shape of the basal portion of the median apophysis (longer than wide in P. nadolnyi sp. n. vs. wider than long in P. chazaliae ) and different shape of the tibial apophysis (horizontal in P. chazaliae (cf. figs 104, 105 in Levy 1995) vs. strong and triangular in the new species (cf. Fig. 3c)).

Description.

Male (holotype, AMNH_IZC 00326742). Total length 7.9. Carapace 3.6 long, 3.0 wide. Eyes sizes and interdistance: AME: 0.20, ALE: 0.15, PME: 0.22, PLE: 0.15, PME–PME: 0.05. Carapace, sternum, labium, chelicerae and maxillae light brown without any distinct patterns, with darkening ocular area. Chelicerae with a long tooth-shaped keel retrolaterally (Fig. 5d), and serrated keel prolaterally (Fig. 5e). Abdomen cream with short transparent setae and with scutum anteriorly. Legs the same color as carapace and with spines. Scopula on metatarsi and tarsi indistinct. Measurements of legs: I: 16.5 (4.15, 1.75, 3.25, 4.75, 2.6), II: 16.55 (4.3, 1.75, 3.15, 4.8, 2.55), III: 22.1 (4.5, 1.8, 3.35, 5.95, 2.85), IV: 12.4 (3.35, 1.2, 2.45, 3.25, 2.15). Anterior lateral spinnerets 1.45 long, 0.40 wide. Palp as in Fig. 2c, 3c. Tibial apophysis strong and triangular, pointing anteriorly; median apophysis with longer than wide elliptic base and a long curved apical hook; conductor large; embolus filliform and without a stylus, originating near the 6 o’clock position, shortly tapering posteriorly near the apex of conductor.

Female. Unknown.

Distribution.

Currently known only from the listed localities in the United Arab Emirates (Fig. 7).