Viticulture is one of the main economic activities in Rio Grande do Sul (RS), Brazil, with emphasis on the American grape varieties, Vitis labrusca L. (Vitaceae), used in producing juices and wines. The present work aimed to identify the mite species associated with American grapevines (V. labrusca), their possible natural enemies, and their population fluctuations. The selected varieties were: Bordô (Bd) and Couderc (Cc and Cd) in Dois Lajeados (RS), Bordô (Bi) in Imigrante (RS) and Bordô (Bp), in Putinga (RS). The study was conducted monthly between March 2017 and March 2018, evaluating 20 randomly selected plants from each municipality. We found 5,452 mites belonging to 13 families, distributed across 29 genera and 42 species, or belonging to the suborder Oribatida. Higher mite richness was observed on Cc (12 species) and higher abundance on Cd (2,812 specimens), Cc (868) and Bi (799). Among the predatory mite families, Stigmaeidae had the highest abundance (896 specimens), followed by Phytoseiidae (746). The most abundant species observed were Euseius mesembrinus (Dean), Agistemus riograndensis Johann & Ferla, Tydeus californicus (Banks), Polyphagotarsonemus latus (Banks) and Tarsonemus sp. This is the first study in southern Brazil that evaluates and reports the mite fauna and its ecology on American grape varieties, with high abundance and frequency of predatory mites. This work is important to assist in implementing management techniques that promote the maintenance of predatory mite species in these vineyards.

Two new genera and seven new species of eriophyoid mites from China are described and illustrated. They are Alveacaphyllisa clethra gen. nov. & sp. nov. on Clethra barbinervis Sieb. et Zucc. (Clethraceae), Acaricalus liquidambarus sp. nov. on Liquidambar formosana Hance (Altingiaceae), Abacarus dendrocalamus sp. nov. on Dendrocalamus hamiltonii Nees et Arn. ex Munro (Poaceae), Tetra spina sp. nov. on Dalbergia hupeana Hance (Fabaceae), Paraepitrimerus rhododendrus sp. nov. on Rhododendron delavayi Franch. (Ericaceae), Diabsentophyes saurauia gen. nov. & sp. nov. on Saurauia sp. (Actinidiaceae), Diptacus liquidambarus sp. nov. on Liquidambar formosana Hance (Altingiaceae). In addition, images of the characteristics of five new record species are provided, they are: Setoptus semiornatum Pye, 2011 rec. nov. on Pinus sp. (Pinaceae), Calacarus capsica Chakrabarti & Mondal, 1979 rec. nov. on Capsicum annuum Linn. (Solanaceae), Calepitrimerus glacialis Keifer, 1961 rec. nov. on Cryptomeria japonica var. sinensis Miq., 1870 (Cupressaceae), Phyllocoptruta citricola Chakrabarti & Sarkar, 2011 rec. nov. on Citrus maxima (Burm.) Osbeck (Rutaceae) and Diptilomiopus davisi Keifer, 1969 rec. nov. on Macadamia ternifolia F. Muell. (Proteaceae).

Species from China of the subgenus Scheloribates (Topobates) are studied, with description of a new species Scheloribates (Topobates) tibetensis sp. nov. based on adult specimens from Tibet. The new species differs from S. (T.) lanceolatus Wallwork, 1977 by heterotridactylous (versus monodactylous), shorter interlamellar seta, not forward to the tip of rostrum (versus longer interlamellar seta, beyond forward to the tip of the rostrum), genital seta g₁ longer than g₂–g₄ (versus genital seta g₁ similar to g₂–g₄ in length). A key to known species of Scheloribates (Topobates) is provided.

The oribatid mite genera Carinogalumna (Galumnidae) and Neoribates (Parakalummidae) are recorded for the first time in Indonesia. Two new species—Carinogalumna widyastutiae sp. nov. and Neoribates (Neoribates) klarneri sp. nov.—are described from soil and litter in rubber and oil palm plantation systems on the island of Sumatra. An identification key to the 28 known species of Neoribates from the Oriental region is provided.

The erythraeid species can be assigned with larva or adult only, or both under current Erythraeidae taxonomy. The present study describes two new erythraeid species from Yunnan-Guizhou Plateau (Oriental region). Marantelophus neodubifurcatus sp. nov. is based on larvae that were off-host when collected, while Erythraeus (Zaracarus) mossesus sp. nov. is based on a female adult, which was preying on an ant when collected, and larvae which were her offspring. The genus Marantelophus is divided into two species groups based on the odontus with or without a subterminal tooth, and M. neodubifurcatus sp. nov. belongs to the group with the subterminal tooth. The larval members of the subgenus Erythraeus (Zaracarus) are divided into five species groups, and E. (Z.) mossesus sp. nov. belongs to the group with the characters such that AL without swelling near bases, and fn BFe = 2-2-2.

Four new eriophyoid mite species of the genus Diptilomiopus Nalepa (Acari: Diptilomiopidae) from China are described and illustrated. They are D. cotoneastrus sp. nov. on Cotoneaster acutifolius Turcz. (Rosaceae), D. clidemioidus sp. nov. on Boehmeria clidemioides var. diffusa (Wedd.) Hand.-Mazz. (Urticaceae), D. quinatus sp. nov. on Vitex quinata (Lour.) F.N.Williams (Lamiaceae), and D. macropodus sp. nov. on Daphniphyllum macropodum Miq. (Daphniphyllaceae). All new species are distributed in the Oriental Region of China. They are vagrants on the leaves causing no apparent symptom to their host plants. We further provided mitochondrial cox1 gene sequences for the four new species.

A new species of Neocarus is described from adult female and male specimens collected from an epigean and hypogean ferruginous geosystem located in southeast Brazil. The new species, Neocarus congado sp. nov., is an atypical species with the male expressing dimorphic characters in the chelicera, palp and dorsal shield, through setae with different shapes and often in clusters with a dense set of setae.

Twelve species, 10 genera and five families of Oripodoidea (Oribatida) are registered from leaf litter in secondary semi-evergreen forest in Quintana Roo, Mexico; of them, five species (Nasobates spinosus, Mucrobates fissuratus, Scheloribates milleri, S. (Perscheloribates) minusculus, Protoribates paracapucinus) are recorded for the first time in this country; two species (Muliercula bilineata, Peloribates (Peloribatodes) roynortoni) are found for the first time in the Neotropical region. Two new species—Scheloribates (Perscheloribates) mexicoensis sp. nov. (Scheloribatidae) and Setoxylobates palaciosvargasi sp. nov. (Haplozetidae)—are described. An identification key to the known species of Scheloribates (Perscheloribates) from the Neotropical region is provided.

In recent years, the utilization of biocontrol agents to administer agriculture pests has received more attention, which has conduce to an growth in companies generating biocontrol agents, including predators and parasitoids. Amblyseius swirskii Athias-Henriot as a part of predatory communities in greenhouses is currently used worldwide as a biocontrol agent against small insects and various mites, especially to suppress the population of the two-spotted spider mite (TSSM), Tetranychus urticae Koch. To improve mass rearing of A. swirskii and optimize its application in integrated pest management programs, its development rate was determined at seven constant temperatures ranging from 15 to 34 (±1)°C, 50±10% RH and a photoperiod of 16:8 (L:D) h under laboratory conditions. None of the eggs hatched at 34°C and no development was observed. To determine the lower temperature threshold (T₀) and thermal constant (K) of different stages of the predator, two linear models (ordinary and Ikemoto) were used. In addition, 26 nonlinear models were fitted to evaluate the development rate at different temperatures. The lower temperature threshold (T₀) and thermal constant (K) of total immature stages were estimated by the ordinary (3.72°C and 133.22 DD) and Ikemoto (10.64°C and 86.51DD) linear models. Based on the Akaike information criterion (AIC), the best model for the description of the temperature-dependent development rate of the egg, larval, protonymphal, and dutonymphal stages was the Ratkowsky model and for the whole pre-adult stage, it was the Logan-6 model. Our results provided a detailed evaluation of the thermal requirements of A. swirskii, which can be important in improving the role of this mite in biological control programs.

Gansu is a province in the northwest of China that is well known for its rich grassland types and important alfalfa planting base in China. Among the key limiting factors in alfalfa products and high quality are insect and mite pests, particularly those occurring on root and stem parts. Mite populations were collected on alfalfa roots from Jiuquan City located in the northwest part of Gansu Province. This study aimed to identify the principle mite species infesting alfalfa in Gansu Province, by molecular and morphological characterization. DNA from 20 specimens and morphological data from 45 specimens (15 adult females, 20 adult males [10 homeomorphic and 10 heteromorphic] and 10 deutonymphs were used to confirm the identity of the mite species. The species present is described here as a new species (Sancassania alfalfa Shang & Li, sp. nov.).

Brevipalpus yothersi is an important pest to citrus crop due to its ability to transmit the virus that causes citrus leprosis. The exposure of target and non-target organisms to different pesticides is a reality in field conditions. For successful management, it is essential to determine the effects of citrus commonly used pesticides on leprosis mites to determine how pesticides can interfere with the leprosis mite population. Therefore, this study aimed to evaluate the impact of insecticides, alone or associated with spirodiclofen, on B. yothersi life history traits and demographic parameters under laboratory and greenhouse conditions. Results suggest that cypermethrin and imidacloprid, both alone and in a mixture with spirodiclofen, phosmet in a mix with spirodiclofen and spirodiclofen alone did not interfere significantly in the fecundity and fertility of B. yothersi in laboratory conditions. In the same condition, only phosmet at 15.6, 125.0, and 250.0 mg.L^-1 reduced the fecundity of the mites. Brevipalpus yothersi population varied with the insecticide and mixture type in the greenhouse condition. Most insecticides and acaricide, alone or in a mixture, decreased pre-adult development, whereas female adult longevity was similar to control. Spirodiclofen combined with phosmet and imidacloprid decreased female adult longevity. Only spirodiclofen in a mixture with cypermethrin and phosmet alone did not interfere significantly with the intrinsic rate of population increase. The other insecticides and mixtures reduced that parameter. The mean time of one mite generation was decreased when the mites were exposed to all insecticides and acaricide combinations, spirodiclofen and phosmet alone. Therefore, cypermethrin, phosmet, imidacloprid, and spirodiclofen, alone or in a mixture, negatively impacted the development time and demographic parameters of B. yothersi.