Published records. Avenul Betfia, Peştera Gaura cu Muscă (Haelewaters et al. 2017; Sándor et al. 2018; McKee et al. 2019), host Mi. schreibersii. Peștera Buhui (Burghele-Bălăcescu 1966; Negrea et al. 1967); Rosia (Willemsen & Thomassen 2009); Peștera cu Apă din Valea Leşului (Postawa & Nagy 2016), Canaraua Fetii, Leghia, Peștera Gaura cu Muscă, Peștera Liliecilor de la Gura Dobrogei (Haelewaters et al. 2017; Sándor et al. 2018; McKee et al. 2019) host My. blythii. Peștera Fuşteica, Peştera de la Izverna, Peștera Liliecilor de la Gura Dobrogei (Decu-Burghele 1962); Peștera de la Izvorul Tăușoarelor, Peștera de la Izverna, Peștera Comarnic, Peștera Fușteica, Peștera Liliecilor-Carașova (Burghele-Bălăcescu 1966); Peștera Comarnic, Peştera Liliecilor (Negrea et al. 1967); Peștera Urșilor (Gheorghiu 2006); Rosia, Cheile Cuților, Cheile Albioarei, Doline (Willemsen & Thomassen 2009); Peștera cu Apă din Valea Leşului (Postawa & Nagy 2016); Avenul Betfia, Peştera Gaura cu Muscă (Haelewaters et al. 2017; Sándor et al. 2018; McKee et al. 2019), host My. myotis. Peștera Liliecilor de la Gura Dobrogei (Decu-Burghele 1962), host Rhinolophus mehelyi Matschie. Peștera Liliecilor de la Mănăstirea Bistrița (Decu-Burghele 1963); Peștera Liliecilor de la Mănăstirea Bistrița (Burghele-Bălăcescu 1966); Peștera Fușteica (Burghele-Bălăcescu 1966), host unknown.
Material examined. Avenul Betfia, 07.05.2019, 4 females, 1 male; Mocrea, 08.05.2019, 1 female; 18.09.2020, 1 female; Peștera de la Gura CetățiiParoș, 13.09.2019, 1 female, 1 male, host Mi. schreibersii. Avenul Betfia, 07.05.2019, 2 females, 2 males; Canaraua Fetii, 22.05.2017, 2 females; 02.08.2018, 11 females, 13 males; 20.09.2019, 2 females; 21.05.2020.21, 4 females, 4 males; Leghia, 04.05.2018, 1 female, 3 males; Peștera Liliecilor de la Gura Dobrogei, 14.05.2017, 1 female; Peștera Lócsűr (Cheile Vârghișului), 02.09.2020, 1 female, 1 male; Peștera Mare de la Merești, 03.09.2020, 2M; Peștera Gaura Ungurului de la Pecinișca, 2017.09.05, 1 female, host My. blythii. Canaraua Fetii, 02.08.2018, 1 female, 6 males, host Myotis capaccinii (Bonaparte). Canaraua Fetii, 31.07.2018, 1 female; 02.08.2018, 10 females, 12 males; Peștera Liliecilor de la Gura Dobrogei, 24.04.2019, 2 females, 1 male; Peștera Lócsűr (Cheile Vârghișului), 23.08.2018, 2 males; Somova, 21.09.2019, 3 males, host My. daubentonii. Avenul Betfia, 07.05.2019, 15 females, 25 males; Canaraua Fetii, 02.08.2018, 1 female, 5 males, 21.09.2019, 1 male; 2019.08.24, 6 females, 2 males; Peștera Mare de la Merești, 21.04.2020, 2 females, 1 male; 02.09.2020, 1 female, 1 male; Peștera de la Întorsuri, 21.09.2020, 1 female; Peștera Osoi, 22.09.2020, 1 female; Țifra, 28.05.2020, 1 female, host My. myotis. Peștera Mare de la Merești, 24.08.2019, 2 females, 2 males, host N. noctula. Canaraua Fetii, 01.08.2018, 1 female, host Pipistrellus nathusii (Keyserling & Blasius). Canaraua Fetii, 27.05.2019, 1 male, host Rhinolophus euryale Blasius. Canaraua Fetii, 31.07.2018, 3 females, 4 males; Gilău, 04.05.2017, 1 female, host R. ferrumequinum.
Distribution. One of the most widespread nycteribiid species in Europe, Asia, and North Africa (Szentiványi et al. 2016). Common in Romania, collected from all historical regions with 36 distinct geographical records altogether.
Remarks. One of the typical ectoparasites of the two largest Myotis Kaup species in Europe (My. blythii and My. myotis), also frequently collected from other cave-dwelling species present in the same roosts as its primary hosts. Here, we report a new host-parasite association for this species (on R. mehelyi).