Identification of phytosanitary important mites of the genus Tyrophagus Oudemans, 1924 in the fauna of Russia (Astigmata, Acaridae)

The article is devoted to the identification of phytosanitary important species of the genus Tyrophagus in the fauna of Russia, primarily, T. putrescentiae (Schrank, 1781), T. longior (Gervais, 1844), T. vanheurni Oudemans, 1924, T. perniciosus Zachvatkin, 1941, which damage plant products during storage: grain, root crops, bulbs, seeds of agricultural crops, peanuts, etc.; vegetable crops in protected ground, including when used as a trophic substrate for predatory mites – biocontrol agents, and (less often) open ground, industrial fungi crops; in phytopathological laboratories they can destroy mycological cultures causing damage to biocollections of fungal organisms. This paper summarizes information on the fauna of mites of the genus Tyrophagus common in Russia, and provides new records on T. fanetzhangorum Klimov&OConnor 2009 from the European part of Russia. An assessment of the variability of some diagnostic characters of T. putrescentiae from different geographic localities is made. The variability of the characters is shown: the shape of the apex of the solenidium ω1 on tarsi I; the shape of scx; the location of the suckers on tarsi IV of males. Diagnostic characters are presented that allow distinguishing T. putrescentiae from other Tyrophagus species in the fauna of Russia. The study revealed that the “absence of eyespots” is typical of the following species: T. formicetorum, T. molitor, T. mixtus. A key to the phytosanitary important species of the genus Tyrophagus in the fauna of Russia is provided, taking into account previous studies on the taxonomy and nomenclature of the genus under discussion. The article contains original illustrations of key diagnostic characters. The information presented may be useful in the practical work of specialists of plant protection, including biocontrol, quarantine phytosanitary laboratories, agronomists, etc.

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