The following taxa are recorded for the first time: for the Palaearctic-Superioropus huronmontanus (genus and species); for Russia-Pleuronectocelaeno japonica, Trichouropoda karawaiewi, Dendrolaelaps pini, Gamasellodes tatricus, Scutacarus palustris, Tarsonemus typographi, Heterotarsonemus lindquisti, Hemisarcoptes, Saproglyphus waldorfae, Naiadacarus, Schwiebea nesbitti, Histiostoma pini, and H. ovalis. Of them, 60 species were collected by catching beetles with pheromone traps and examining them for phoretic mites. We provide information on the current distribution, host association, and biology of these mites. In this article, we also discuss the following information, which we have documented: our biological observations of mites in the beetles' galleries, abundance of phoretic mites on hosts, as well as specific sites where they occur. To facilitate morphological diagnostics, common mite species were illustrated using a Scanning Electron Microscope (SEM), as well as light microscopy.

A new species of phytoseiid mites, Neoseiulus neoagrestis sp. nov., was described based on all ontogenetic stages and extensive comparison with types/vouchers of closely related species and a thorough analysis of GenBank data. Mite specimens were collected in an area at the eastern coast of the Black Sea of Russia and cultured. Molecular barcoding revealed a close match (100–99.25%) with several unidentified COX1 sequences from Canada. Both Canadian and Russian mites reproduced sexually and had consistent morphology, including the presence of gd2 gland pores, indicating that they belong to a single species, N. neoagrestis sp. nov. The presence of gd2 gland pores distinguishes N. neoagrestis sp. nov. from a closely related, parthenogenetic species N. agrestis (Karg), which lacks gd2 gland pores. Despite having an arguably negligible morphological difference, these two species were clearly distinct by COX1 sequences (19.95–22.01% K2P distances). We studied the ontogeny of N. neoagrestis sp. nov. and provided comparison with related Neoseiulus species. Furthermore, our examination of types of N. agrestis, N. salish, and N. striatus indicated that the latter two species are potential junior synonyms of N. agrestis.

The predatory mite, Neoseiulus neoagrestis Khaustov and Döker (Acari: Phytoseiidae), recently described as new species for science, but seems to have a great potential to be used in biological control. In this study, as a first step to determine the optimum temperature (between three temperatures tested) for its mass rearing, we studied its biological characteristics and life table parameters fed on Tyrophagus putrescentiae (Schrank) (Acari: Acaridae) at three different temperatures (20, 25, and 30 °C) under laboratory conditions. Results show that immature development, oviposition period as well as reproductive potential of this predator are significantly vary depending on the temperature. The immature developmental times and adult longevity for females, are ranged between 5.42 to 10.42 days and 39.88 to 74.12 days, based on the temperature, respectively. Average total number of eggs laid by per female at 25 °C (62.29) and 30 °C (58.65) are more or less similar but higher than that determined at 20 °C (41.46). The highest net reproductive rate (R₀) is 29.066 (offspring/individual) at 25 °C. In addition, the highest intrinsic rate of natural increase (r) is 0.241 day^-1 at 30 °C. Furthermore, the highest finite rate of increase (λ = 1.272 day^-1), and the shortest mean generation time (T = 13.416 days) and doubling time (DT = 2.874 days) are also determined at 30 °C. Our results demonstrate that N. neoagrestis successfully completed immature development, and can survive and reproduce at all tested temperatures. Nevertheless, a series of biological characteristics of this predator are differentially affected by the temperature. Finally, 25 °C and 30 °C seems to be more suitable for mass rearing of this predator on T . putrescentiae. Further studies should be conducted to determine biological characteristics and life table parameters of N. neoagrestis on several important pests such as spider mites, whiteflies and thrips.

A new species of the family Phytoseiidae (Acari: Mesostigmata), Neoseiulus cunhaensis Döker & Ueckermann sp. nov. is described from female specimens. In addition, a key to the species of the paspalivorus species group in the genus Neoseiulus Hughes is presented.

This paper reports on ten species of laelapid mites associated with ants and bumblebees in Western Siberia. Androlaelaps myrmecophilus (Evans & Till), Cosmolaelaps dendrophilus (Davydova), C. neocuneifer (Evans & Till), C. siberiensis Joharchi sp. nov., Gaeolaelaps praesternalis (Willmann), Holostaspis isotricha Kolenati, H. montana (Berlese) and H. oophilus (Wasmann) were collected from ants’ nests, and Pneumolaelaps hyatti (Evans & Till), P. marginepilosa (Sellnick) on bumblebees. The new species is described and illustrated based on morphological characters of the adult female.

Typhlodromus (Anthoseius) tetraporus sp. nov., collected on grasses in Crimea, is proposed as a new species for science. The new species can be separated from all known species of Typhlodromus (Anthoseius) by the combination of following characters; peritreme extending almost to level of setae j1, four pairs of solenostomes on dorsal shield, two pairs of setae on sternal shield, a sclerotised v-shaped plate posterior to sternal shield, four pairs of pre-anal setae, a pair of small rounded pre-anal solenostomes, differentiated and larger atrium of spermatheca and eight setae on genu II. In addition, T. (A.) montanus Chant & Yoshida-Shaul (Acari: Phytoseiidae), a species only known based on its original description from Canada is reported for the first time in Russia. The new record is redescribed and illustrated based on female specimens collected from Prunus padus L. (Rosaceae) where it was associated with eriophyid mites in Pereval Seminskiy, Altai Republic. This species may be an important predator as a potential biological control agent of eriophyid mites.

Typhlodromips montanus (Wainstein) comb. n. (Acari: Phytoseiidae) is reported for the first time from Russia. It is redescribed and illustrated based on female and male specimens collected from the Altai Republic, Russia. This species was previously placed in the genus Neoseiulus Hughes. However, it fits well with the current concept of the genus Typhlodromips De Leon, due to the combination of: the presence of macrosetae on GeII, GeIII and TiIII, and fixed digit of chelicera with more than six teeth.

Mites of the genus Amblyseius (Acari: Phytoseiidae) in Western Siberia, Russia are reviewed. Amblyseius silvaticus (Chant), A. ampullosus Wu and Lan and A. myrtilli Papadoulis, Emmanouel and Kapaxidi are recorded for the first time from Russia. Females of A. silvaticus, A. omaloensis, A.myrtilli and A. ampullosus are redescribed in detail and males of A. silvaticus and A. ampullosus are described for the first time. Chaetotaxy of tarsus I for all studied species is presented. Moreover, the importance of apical sensorial setal cluster of tarsus I in identification of phytoseiid mites is discussed.