A complementary description of Neoseiulus longilaterus (Athias-Henriot) is presented based on adult female specimens collected in Iran, marking the first record of this species in the country. Specimens of this species were collected in galls of an unidentified eriophyid mite on desert thorn leaves (Lycium shawii Roem. & Schult., Solanaceae). While Chant & McMurtry (2003) categorized this species within the cucumeris species group of Neoseiulus Hughes, its morphological characteristics align more closely with some species from the paspalivorus group. Therefore, we provisionally classify N. longilaterus within the paspalivorus group. In addition, an updated and revised key for identifying the known species in the latter group is also provided. We also consider N. engaddensis syn. nov. as a junior synonym of N. longilaterus.

Two new species of eriophyoid mites were found and described from south China: Shevtchenkella wudongensis sp. nov. and Rhinotergum largituberis sp. nov. Both new species infest Juglans regia L. (Juglandaceae) and are vagrants on lower leaf surface of host plants with no particular symptom.

A new mite species of the stigmaeid genus Eustigmaeus Berlese, 1910, E. asper sp. nov., is described from Honshu, Japan. Additionally, E. rhodomelus (Koch, 1841), which is broadly distributed in the Holarctic region, and E. pseudolacunus Khaustov, 2023, which was originally described from Russia, are recorded from Japan for the first time.

The present study is based on the oribatid mite material collected from litter in Limu Mountain National Forest Park in Hainan Island, China. A list of 55 species and four subspecies, belonging to 37 genera and six subgenera in 29 families, is presented. Among them, two genera and 17 species are newly recorded in China, and one new species, Phthiracarus limuensis sp. nov. (Phthiracaridae), is described. The new species is easily distinguished from other congeneric species by the presence of distinct median crista and longitudinally striae on surface of prodorsum. In addition, an identification key to all known species of Phthiracarus from China is presented.

A new genus Proathyreacarus gen. nov. with the type species Athyreacarus staturosus is described. The genus Athyreacarus is divided into three subgenera: Athyreacarus sensu stricto, Athyreacaroides subgen nov. with the type species Athyreacarus brevisetosus, and Parathyreacarus subgen. nov. with the type species Athyreacarus magnificus. Four new species are described: Proathyreacarus argentiniensis sp. nov. from Argentina phoretic on the beetle Zefevazia rosascostai (Bolboceratidae); Athyreacarus (Athyreacaroides) australiensis sp. nov. and A. (Athyreacaroides) squamosus sp. nov. from Australia phoretic on the bolboceratid beetles Australobolbus pseudobscurius and Australobolbus rotundatus rotundatus, respectively; and Athyreacarus (Parathyreacarus) aequalis sp. nov. from Bolivia phoretic on the beetle Neoathyreus lobus (Bolboceratidae). The Athyreacaridae was described from Australia for the first time. A revised and updated key to genera, subgenera and species of Athyreacaridae is also provided.

Tetranychus evansi Baker & Pritchard is a destructive pest of solanaceous crops that causes severe damage, is aggressively invasive, and has recently invaded Taiwan. This study investigated the biology of T. evansi using Solanum nigrum L. as a host, focusing on the pest's life history and population performance under varying temperatures to explore its ecological characteristics. The duration of the developmental stages of T. evansi decreased as the temperature increased, with only 6.18 days required to reach the adult stage at 30°C. The lower developmental threshold was 13.04°C, and the thermal constant was 108.23 degree-days. The lifespan of female mites also decreased with increasing temperature, being 11.11 days at 30°C. Male mites had the shortest lifespan of 20.85 days at 27°C. The total pre-oviposition period of females considerably decreased with increasing temperatures, with the longest oviposition period of 35.49 days occurring at 18°C, with an average of 195.74 eggs laid per female. Additionally, the net reproductive rate was highest at 18°C, reaching 133.72 eggs/female, and the intrinsic rate of increase (r) and finite rate of increase (λ) both increased with increasing temperature, reaching 0.4225 and 1.5258 day^–1 at 30°C, respectively. By contrast, the mean generation time decreased with increasing temperature, and was only 10.34 days at 30°C. This study provides crucial information regarding the ecology of T. evansi and can serve as a reference for future applied research.

The female of Trachycilliba persica (Kazemi & Kontschán) is redescribed, and the male and deutonymph of the species are described for the first time based on the holotype and additional specimens from Iran. Notes on the genus Trachycilliba are given. Finally, a key to the known species of Trachycilliba is provided.

The two-spotted spider mite, Tetranychus urticae Koch (Acari: Tetranychidae), poses a significant threat to agricultural production due to its herbivorous feeding habits and pesticide resistance. This study investigated the effects of sublethal concentrations of chlorfenapyr (LC₁₀, LC₂₀ and LC₃₀) on the development and reproduction of T. urticae and its predatory mites Phytoseiulus persimilis Athias-Henriot and Neoseiulus californicus McGregor (Acari: Phytoseiidae) under controlled laboratory conditions. Bioassay tests were conducted using a leaf disk dipping method at various pesticide concentrations. The raw data from the life table experiments were analyzed based on age-stage, two-sex life table analysis at a 5% significance level. Our findings revealed significantly reduced T. urticae egg hatching time at LC₂₀. The duration of larva and protonymph stages of predatory mites often increased from LC₂₀ onwards, while the deutonymph stage showed no significant changes. The total lifespan of T. urticae decreased from 23.11 days (control) to 18.65 days (LC₃₀) and in both predators, it significantly reduced from LC₂₀. The fecundity, GRR and R₀ declined significantly at LC₁₀ and above for all species, and the mean generation time (T) showed a significant reduction only in T. urticae. The results suggest that chlorfenapyr displays high toxicity against T. urticae, potentially enabling effective control at low concentrations, while having minimal impact on N. californicus at field-relevant concentrations, as significant effects were observed at higher doses, and exhibiting moderately toxic to P. persimilis, demonstrating its selective toxicity and making it a viable option for IPM programs when applied at appropriate concentrations to minimize risks to beneficial predatory mites.

Micromegistus thorpei sp. nov. is described from the large carabid beetle Trichosternus fax from the wet tropics of Queensland. This species represents the first Parantennulidae described from Australia, even though the genus was known for more than 50 years, with Australian collections later assumed to be conspecific with the New Zealand species Micromegistus gourlayi Womersley, 1958. Using citizen science records from iNaturalist and collections at the Queensland Museum, I show that Micromegistus occurs in Australia from Melbourne to northern Queensland, and in New Zealand is widely distributed on both islands. In both countries, host beetles include various genera of large carabid beetles, as well as one record from a tenebrionid beetle. Collections from pinned specimens of Queensland carabid beetles suggest the genus is far more diverse than previously thought, and also that they can occupy the subelytral space of their host.

In this paper, two new species, Hygrobates (Monobates) glabra Liu & Guo sp. nov. and Hygrobates (Rivobates) acuminatus Liu & Guo sp. nov., are described and illustrated in detail, which were collected from Hainan Province and Xinjiang Uygur Autonomous Region, P. R. China, respectively. Additionally, structures with special taxonomical relevance was recorded with scanning electron micrographs.

Two new species of intertidal oribatid mites of Ameronothroidea (Oribatida)—Alismobates tobiaspfingstli sp. nov. (Fortuyniidae) and Selenoribates gibbosus sp. nov. (Selenoribatidae)—are described, based on adults collected from litter of a mangrove forest in the Can Gio Biosphere Reserve, southern Vietnam. These are the first records of these families for the Vietnamese fauna. Alismobates tobiaspfingstli sp. nov. differs from the related species A. reticulatus by the absence of the interbothridial ridges, the length of the interlamellar seta, the presence of longitudinal ridges on the notogaster, the morphology of posterior part of the notogaster, and the location of the adanal lyrifissure. Selenoribates gibbosus sp. nov. differs from the related species S. quasimodo by the presence of the hump-like, narrowed distally structure in centrodorsal part of the notogaster and two oblique ridges in anterior part of the notogaster, the number of the adanal setae and the location of the adanal lyrifissure.

The adult and juvenile instars of Annectacarus unilateralis (Oribatida, Lohmanniidae) were collected from litter of a mangrove forest in southern Vietnam. A supplementary description of the adult is presented along with summarized diagnostic morphological traits. The larval, proto-, deuto-, and tritonymphal instars are described.