Pseudosinella immaculata (Lie Pettersen, 1896) (Fig. 4B)

Material examined. Three specimens, Iran, Mazandaran province, Sari, Farim, Bula forest, soil, N36°02’10.72", E53°16’51.68", 1599 m a.s.l., 19-IV-2021, leg. E. Yoosefi Lafooraki.

Distribution. Palaearctic (Potapov, 2001). This species is reported for the first time from Iran.

Diagnosis. The identification of the species was done according to Fjellberg (2007) as below: The length of the body is about 2 mm with white colour. The eyes absent. Claws with large, unequal inner pairs of teeth. One distal tooth set in the middle of the inner edge, between the paired teeth. Lateral teeth set near base. Empodium at most with 2–3 delicate serrations on the ventral edge. Dorsal tenant hair (A 1) of tibiotarsus is thin and pointed, shorter than Empodium (Fig. 4B). The claw resembles that of decipiens, but that species has two distal teeth on the inner edge, the inner one set clearly beyond the tips of the paired teeth. Also, decipiens has a much longer tenant hair which is distinctly clavate (Fig. 4B).