Trygetus susianus, Zamani & Marusik, 2021

Zamani, Alireza & Marusik, Yuri M., 2021, Revision of the spider family Zodariidae (Arachnida, Araneae) in Iran and Turkmenistan, with seventeen new species, ZooKeys 1035, pp. 145-193 : 145

Trygetus susianus sp. nov. Figs 26D , 27E-H , 32

Trygetus jacksoni : Zamani et al. 2018: 188 (♀, misidentified).

Type material.

Holotype ♀ (MHNG), Iran: Khuzestan Province: north of Andimeshk, 32°41'N, 48°15'E, 17.05.1974 (A. Senglet).

Etymology.

This species is named after Susa, one of the most important cities of the Ancient Near East. It is located in the lower Zagros Mountains, about 250 km east of the Tigris River, between the Karkheh and Dez Rivers, in what is currently the Khuzestan Province of Iran.

Diagnosis.

The epigyne of the new species is very similar to that of T. gromovi . They differ by the presence of a lateral extension of the receptacle and the lack of sclerotized lateral margins in the new species (vs. absent and present, respectively).

Description.

Female (specimen partially bleached). Habitus as in Fig. 26D . Total length 2.07. Carapace 0.96 long, 0.53 wide at pars cephalica, 0.69 wide at pars thoracica. Eye sizes: AME: 0.08, ALE: 0.05, PLE: 0.04. Carapace, sternum, labium, chelicerae and maxillae yellowish brown, without any pattern. Legs slightly lighter than carapace, without spines and without annulations. Abdomen grayish, darker dorsally. Spinnerets pale, uniform in color. Measurements of legs: I: 2.19 (0.61, 0.29, 0.44, 0.44, 0.41), II: 1.98 (0.58, 0.28, 0.39, 0.36, 0.37), III: 1.90 (0.52, 0.26, 0.32, 0.40, 0.40), IV: 2.50 (0.67, 0.28, 0.48, 0.63, 0.44).

Epigyne as in Fig. 27E-H . Epigyne medially with posteriorly diverging sclerotization, laterally with translucent fertilization ducts; receptacles almost round, separated by less than their diameters, each subdivided into a large, weakly sclerotized part and a smaller, more heavily sclerotized part.

Male. Unknown.

Distribution.

Known from two localities in Khuzestan Province, southwestern Iran (Fig. 32 ).

Figures

Figure 26. Males of Parazodarion raddei (A-C) and Acanthinozodium elburzicum sp. nov. (E) and female of Trygetus susianus sp. nov. (D) A, D habitus, dorsal B, C palp, ventral and retrolateral E chelicerae, ventral. Scale bars: 0.2 mm, unless stated otherwise.

Figure 27. Epigynes of Parazodarion raddei (A-D) and Trygetus susianus sp. nov. (E-H) A, E intact, ventral B, F-H macerated, dorsal C, D macerated, ventral. Scale bars: 0.2 mm.

Figure 32. Distribution records of Acanthinozodium spp. (partim 1 - 4, 11), Lachesana spp. (5 - 7), Parazodarion raddei (8), Pax spp. (9, 10) and Trygetus spp. (11, 12) in Iran and Turkmenistan: 1 A. atrisa sp. nov. 2 A. niusha sp. nov. 3 A. parysatis sp. nov. 4 A. sorani sp. nov. 5 L. insensibilis 6 L. kavirensis sp. nov. 7 L. perseus sp. nov. 8 P. raddei 9 P. ellipita sp. nov. 10 P. leila sp. nov. 11 A. ovtchinnikovi sp. nov., T. gromovi 12 T. susianus sp. nov.