Left: Map of Iran, showing the location of Tashan Cave (black circle); Right: the type locality in Tashan Cave, with Stenasellus tashanensis sp. n.

Stenasellus tashanensis sp. n. male. A habitus (dorsal view) B antenna I C antenna II C' squama of antenna II D maxilliped E maxilla I F maxilla II G right mandible H left mandible I mandibular palp.

Stenasellus tashanensis sp. n. male. A–G peraeopods I–VII A' setation of propus and dactylus of first peraeopod.

Stenasellus tashanensis sp. n. A–E pleopods I–V of male F pleopod II of female G uropod H genital papillae on seventh sternite.

Male pleopod I of Stenasellus vermeuleni (A) S. grafi (B) S. messanai (C) S. henryi (D) S. asiaticus (E) and S. tashanensis sp. n. (F). (Figures A–D from Magniez and Stock 2000; Figure E from Birstein and Starostin 1949).

Male pleopod II of Stenasellus vermeuleni (A) S. henryi (B) S. grafi (C) S. messanai (D) S. asiaticus (E) and S. tashanensis sp. n. (F). (Figures A–D from Magniez and Stock 2000; Figure E from Birstein and Starostin 1949).

Squama of antenna II of Stenasellus vermeuleni (A) S. messanai (B) S. henryi (C) S. grafi (D) and S. tashanensis sp. n. (E). (Figures A–D from Magniez and Stock 2000).