Psyllipsocus ramburii Selys-Longchamps, 1872 ** (Fig. 2A)

Material examined. 9 ♀♀, Iran, Khorasan-e Razavi province, Chenaran city, Kenan 1 (Big Kenan) cave (36°33'58.9"N, 59°04'19.3"E, 1451 m a.s.l.), dark zone, hand collecting under the rocks with an aspirator, 01. VI.2022, dark zone, pitfall traps with propylene glycol, 28. VI.2022, leg. M. Mehrafrooz Mayvan; 8 ♀♀, Iran, Khorasan-e Razavi province, Chenaran city, Kenan 2 (Small) Kenan cave (36°34'03"N, 59°04'18"E, 1467 m a.s.l.), dark zone, hand collecting under the rocks with an aspirator, 29. VI.2022, leg. M. Mehrafrooz Mayvan; 13 ♀♀, Iran, Khorasan-e Razavi province, Mashhad city, Kardeh village, AL cave (36°40'0.2"N, 59°39'19.9"E, 1693 m a.s.l.), dark zone, collected on bat guano with an aspirator, 13.X.2023, leg. M. Mehrafrooz Mayvan; 1 ♀, 6 nymphs, Iran, Khorasan-e Razavi province, Sarakhs county, Mazdavand city, Mazdavand (Mozdouran) cave (36°09'05"N, 60°32'59"E, 1056 m a.s.l.), dark zone, collected on bat guano with an aspirator, 18. VI.2022, leg. M. Mehrafrooz Mayvan; 8 ♀♀, 6 nymphs, Iran, Khorasan-e Razavi province, Sarakhs county, Bazangan village, Bazangan cave (36°18'29"N, 60°22'19"E, 1401 m a.s.l.), dark zone, pitfall traps with propylene glycol, 19.IX.2023, leg. M. Mehrafrooz Mayvan; 1 ♀, Iran, Khorasan-e Razavi province, Mashhad city, Dehbar village (36°14'48"N, 59°17'07"E, 1702 m a.s.l.), extracted with Berlese funnel from soil and litter, 01.VII.2023, leg. M. Mehrafrooz Mayvan.

Distribution in Iran. This species is reported for the first time from Iran and Khorasan-e Razavi province.

Ecology and habitat. A troglophilous species, collected in caves under rocks and on bat guano, surface records come from soil and litter.

General distribution. Cosmopolitan (Lienhard, 2016).

Remarks. This species has been registered for the first time in Iranian caves.