Stigmaeus Koch, 1836: 4

Khanjani, M., Amini, F. & Khanjani, M., 2015, A new species of the genus Stigmaeus koch (Acari: Stigmaeidae) from Kurdistan province, Iran and description of male of Prostigmaeus khanjanii Bagheri and Ghorbani, Acarologia 55 (1), pp. 49-60 : 50

Genus: Stigmaeus Koch, 1836: 4 , 9.

Type species: Stigmaeus cruentus Koch, 1836 (unknown), by original designation.

Diagnosis — (Based on Fan and Zhang, 2005).

Female — Idiosoma narrowly to broadly oval in dorsoventral view, white, yellow, red or dark red in life. Chelicerae separate. Palptibial claw subequal to or slightly shorter than palptarsus; accessory claw seta-like or spine-like; terminal eupathidia on palptarsus basally fused and split into 3 long prongs or simple; counts of setae and solenidia from palptrochanter to palptarsus: 0, 3, 2, 2 + 1 claw + 1 accessory claw, 4 + 1 ω + 1 sub-terminal spine-like eupathidium+3 eupathidia (basally fused). Prodorsum usually with a large shield, bearing 3 pairs of setae (vi, ve and sci) and a pair of platelets bearing setae sce; eyes present or absent, post-ocular bodies (pob) present or absent.

Dorsal hysterosomal areas C-F usually with 1-2 shields surrounded by 3-5 pairs of platelets, sometimes much reduced or absent, shields with 2-3 pairs of setae; setae d 1 and d 2 never on same shield; humeral shields large or small, dorso- or ventrolateral, with setae c 2; intercalary shields (F) obvious, entire or divided along midline, with a pair of setae (f 1). Suranal shield (H) entire or divided, with 2- 3 pairs of setae (h 3 absent or present). Endopodal shields I-II and III-IV present, divided along midline. Ventral opisthosoma with 3-5 pairs of aggenital setae; genital and anal valves fused or contiguous, with 1-3 pairs of genital setae and 3 pairs of pseudanal setae.

Leg tarsal claws robust; empodial shafts branching into tenent hairs before extending beyond tips of claws, with 3 pairs of tenent hairs; counts of setae and solenidia on legs I-IV: coxae (excluding 1a, 3a and 4a) 2 + 1 elcp, 2, 2, 2; trochanters 1, 1, 2, 1; femora 4-6, 4-6, 3, 2; genua 3-5 + 1 κ, 3-4 + 0-1 κ, 0-3, 0-3; tibiae 5 + 0-1 ’ + 1 ’ρ, 5 + 1 ’ρ, 5 + 1 ’ρ, 5 + 1 ’ρ; tarsi 13 + 1 ω, 8-9 + 1 ω, 7 + 1 ω, 6-7 + 0-1 ω. Male. Solenidia on tarsi I-IV: 2, 2, 2, 2.