Drassodes persianus, Zamani & Chatzaki & Esyunin & Marusik, 2021

Zamani, Alireza, Chatzaki, Maria, Esyunin, Sergei L. & Marusik, Yuri M., 2021, One new genus and nineteen new species of ground spiders (Araneae: Gnaphosidae) from Iran, with other taxonomic considerations, European Journal of Taxonomy 751 (1), pp. 68-114 : 81-83

Drassodes persianus sp. nov.

urn:lsid:zoobank.org:act:8A053277-FFE1-4212-B591-51C370E1DCE6

Fig. 8A–F

Diagnosis

The epigyne of the new species is most similar to that of D. longispinus Marusik & Logunov, 1995 ( Fig. 8G–H ) but can be distinguished by the rounded posterior margin of the median plate being slightly extended beyond the epigastric furrow (vs straight, not extended), the relatively long atrium (width/length ratio as shown by broken lines ca 1.4 vs 2) and the lateral margins (Lm) S-shaped with lateral indentations (vs almost parallel).

Etymology

The specific epithet is an adjective and refers to the historical region of the Middle East, located in eastern Mesopotamia, which is now Iran.

Type material

Holotype IRAN • ♀; Sistan & Baluchistan Province , Khash , surroundings of Taftan volcano; 28°36′ N, 61°07′ E; May 2018; A. Zamani leg.; MHNG.

Other material examined

IRAN • 1 ♀ (epigyne only, body lost); Kermanshah Province, Zarrin Joob Vil .; Apr. 2017; M. Amiri leg.; PSU .

Comparative material examined

Drassodes longispinus Marusik & Logunov, 1995

RUSSIA • 1 ♀; Orenburg Area , Belyaevka Distr., ‘ Burtinskaya Steppe’ division of Orenburg Reserve; 51°22′ N, 55°59′ E; Aug. 2016; V.A. Nemkov leg.; PSU-8263 .

Description

Female (holotype)

Habitus as in Fig. 8A . Total length 9.65. Carapace 3.83 long, 3.10 wide. Eye sizes and interdistances of AMEs and PMEs: AME = 0.19, ALE = 0.17, PME = 0.16, PLE = 0.17, AME–AME = 0.13, PME–PME = 0.16. Carapace brown, darker in pars cephalica. Chelicerae, maxillae and labium dark reddish brown. Chelicera ( Fig. 8B ) with 3 retromarginal teeth. Sternum light yellowish brown, darker in the margins. Legs light yellowish brown and without annulations.Abdomen dark gray, without any pattern. Spinnerets light gray. Measurements of legs: I: 10.80 (3.10, 1.48, 2.55, 2.22, 1.45), II: 10.83 (2.91, 1.65, 2.44, 2.27, 1.56), III: 9.76 (2.75, 1.16, 2.16, 2.17, 1.52), IV: 13.31 (3.45, 1.56, 3.00, 3.70, 1.60).

Epigyne as in Fig. 8C–F . Atrium 1.4 times as wide as long, lateral margins inclined mesally, S-shaped with lateral indentations, posterior margin rounded, slightly extended beyond epigastric furrow; mesal receptacles ca 1.2 times wider than lateral ones.

Male

Unknown.

Distribution

Known only from the type locality in Sistan & Baluchistan Province, southeastern Iran, and another locality in Kermanshah Province, western Iran.

Figures

Fig. 8. A–F. Drassodes persianus sp. nov., holotype, ♀ (MHNG). A. Habitus, dorsal view. B. Chelicera, prolateral view. C, E. Epigyne, ventral view.D, F. Epigyne, dorsal view. – G–H. D. longispinus Marusik & Logunov, 1995, ♀ (PSU-8263). G. Epigyne, ventral view. H. Epigyne, dorsal view. Abbreviation: Lm = lateral margin. Scale bars: A = 1 mm; C = 0.2 mm; E–H = 0.1 mm.