One new genus and nineteen new species of ground spiders (Araneae: Gnaphosidae) from Iran, with other taxonomic considerations Author Zamani, Alireza A21C0B82-E2D9-4402-9408-D6160843DAF4 Zoological Museum, Biodiversity Unit, University of Turku, FI- 20014, Finland. Department of Molecular Biology and Genetics, Democritus University of Thrace, Dragana, 68100 Alexandroupolis, Greece. Perm State University, Bukireva Street 15, Perm, 614600, Russia. Institute for Biological Problems of the North RAS, Portovaya Str. 18, Magadan, 685000, Russia. Department of Zoology & Entomology, University of the Free State, Bloemfontein 9300, South Africa. zamani.alireza5@gmail.com Author Chatzaki, Maria 2FBB48ED-84FE-4386-8F47-C958E9F8A2A1 maria.chatzaki@gmail.com Author Esyunin, Sergei L. 2B591857-5FAB-4B7D-B589-6C4977A3A493 Sergei. Sergei.Esyunin@psu.ru Author Marusik, Yuri M. F215BA2C-5072-4CBF-BA1A-5CCBE1626B08 yurmar@mail.ru text European Journal of Taxonomy 2021 2021-06-04 751 1 68 114 http://dx.doi.org/10.5852/ejt.2021.751.1381 journal article 6279 10.5852/ejt.2021.751.1381 4e3af683-d8a6-40de-991b-c4584d66b8cc 2118-9773 4906007 1D27EA41-2396-463A-B1B2-0CCF79C9F3D2 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. 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. Male Unknown. Distribution Known only from the type locality in Sistan & Baluchistan Province , southeastern Iran , and another locality in Kermanshah Province , western Iran .