An unusual finding of a parasitic gamasid mite Macronyssus heteromorphus Dusbábek, Radovsky, 1972 (Mesostigmata: Gamasina: Macronyssidae) in the Trans-Urals

We present the first record of Macronyssus heteromorphus Dusbábek et Radovsky, 1972 (Mesostigmata: Gamasina: Macronyssidae) in the Trans-Urals. Our record is located 1,500 km northwest from the nearest site of this species’ previous record. The collected specimen (male) was found parasitizing a female of Myotis brandtii (Eversmann, 1845) (Chiroptera: Vespertilionidae). The records of both Macronyssus heteromorphus and its host species are the first ones in the Khanty-Mansi Autonomous Area. In this article, we present the measurements of this species for the first time, including the measurements that were omitted from the first description of this mite. Our finding also points to the existence of an area where Myotis brandtii and Myotis sibiricus Kastschenko, 1905 are sympatric