A new species viz. Molothrognathus manisaensis sp. nov., collected from litter and soil under Verbascum sp. (Scrophulariaceae), Inula viscosa (Asteraceae), Quercus coccifera and Q. infectoria (Fagaceae), and the unknown male of Neognathus ozkani Akyol & Koç, 2012, collected from litter and soil under Olea europaea (Oleaceae) in Manisa province, Türkiye, are described and illustrated. A key to the species of Molothrognathus from Türkiye is updated.

Environmental factors, such as the wavelength of light, can have a crucial impact on mite development. Little is, however, known about the effect of visible light quality on demographic parameters of Phytoseiidae. We therefore conducted series of laboratory experiments in which development and reproduction of Phytoseiulus persimilis Athias-Henriot feeding on Tetranychus urticae Koch eggs was investigated under various light conditions (white, blue, green, yellow, and red light). The results revealed that different light wavelengths influenced each developmental stage, with the green light conditions promoting longest pre-adult development. The longevity of both male and female mites varied significantly across light wavelengths, with the shortest lifespan observed under red light. The highest mean total fecundity, 16 eggs per female, was observed under white light conditions. Population parameters (R₀, r, and λ) were also highest under white light and decreased with increasing light wavelength. These findings suggest that light wavelength plays a significant role in development, survival, and reproduction of the predatory mite, with white light being identified as providing the best light conditions for commercial production of P. persimilis.

During the faunistic survey of Cecidophyinae mites in Serbia, a new species, Achaetocoptes dragicae sp. nov., found on Erica carnea L. is described and illustrated. Additionally, supplementary descriptions of six species (Cecidophyes glaber (Nal.), Cecidophyes nudus Nal., Cecidophyes psilonotus (Nal.), Cecidophyes gymnaspis (Nal.), Cecidophyopsis rosmarinusis Wang et al., and Chrecidus quercipodus Manson) are provided. Moreover, Achaetocoptes cerrifoliae (Labanowski & Soika) and Bariella bakonyense Ripka & Csóka, represent new records for the Serbian fauna, while Ce. rosmarinusis and Ch. quercipodus are recorded for the first time in Europe. Sequences of mtCOI barcode region are provided for all species.

The aim of this work was to know the population fluctuation of the mites in apple (Malus domestica Borkh: Rosaceae) orchards with different crop management strategies, with emphasis on Aculus schlechtendali Nalepa (Eriophyidae) and Panonychus ulmi (Koch) (Tetranychidae) and their natural enemies. The studies were carried out in 2020-21, in three organic orchards (Eva, Fuji and Gala), from Antônio Prado, two conventional (Fuji and Gala), from Muitos Capões, RS, Brazil, and two of regenerative agriculture (Fuji and Gala), in São Joaquim, SC, Brazil. Forty plants/orchard were sampled, from which three leaves/plant from the apical, median and basal offshoot were detached. The material was screened and identified in the laboratory. A total of 7.193 specimens, belonging to 14 families, 29 genera, and 40 species, were collected. The most common phytophagous mites were A. schlechtendali (46.2%), P. ulmi (16.9%) and Polyphagotarsonemus latus Banks (Tarsonemidae) (10.9%). Panonychus ulmi was observed in all orchards, being abundant in conventional and regenerative orchards. The most common predatory mites were Neoseiulus californicus (McGregor) (Phytoseiidae), Agistemus riograndensis Johann and Ferla (Stigmaeidae) and Agistemus brasiliensis Matioli, Ueckermann and Oliveira (Stigmaeidae). Among predators, greater diversity was observed in organic orchards, while in conventional and regenerative orchards N. californicus was the most common. Greater acarine abundance was observed when there was an increase in temperatures, and the predatory mites increased their populations in response to the presence of phytophagous mites. The results suggest that the mite populations were influenced by the cultivar and mainly by the management used.

The morphological ontogeny of Melanozetes interruptus Willmann, 1953 is redescribed and illustrated. The juveniles of this species are brown with dark-brown sclerites. In juveniles humeral organ and humeral macrosclerite are present, seta c₁ is inserted on humeral macrosclerite, and setae c₂ and c₃ are inserted on microsclerites. In the larva, the gastronotal shield has seven pairs of setae (d-, l-series and h₁), in the nymphs it has nine pairs (d-, l-, h-series), whereas all setae of p-series are inserted on microsclerites, which is unique in Melanozetes Hull, 1916. In most nymphs of this genus seta p₁ is inserted on gastronotal shield. In the juveniles and adult the legs are stocky, all femora are flattened, and femora I and II have a large ventral carina. Solenidion ω₂ on tarsus I is located anterior to solenidion ω₁ and is longer than ω₁. In this species tarsal setae a are clearly longer than seta s.

Three new species of predatory mites belonging to the genus Amblyseius Berlese (Acari: Phytoseiidae), A. latisetosus sp. nov., A. unodentatus sp. nov., and A. altaiensis sp. nov. are described based on the material collected from Altai Republic, Russia. The new species are assigned to the obtusus species group and andersoni species subgroup by having setae J2 and Z1, short and minute setae z4, sub-pentagonal ventrianal shield, and bell-shaped calyx of spermatheca. All new species were compared with each other and all other Amblyseius species known to date. The main diagnostic characters of these species are measurements of prominent dorsal setae, ventral setae JV5 and macrosetae on leg IV, cheliceral dentition, number of setae on genu II as well as small rounded and distinct pre-anal pores on ventrianal shield.

A new species of tarsonemid mite from the tribe Coreitarsonemini, Coreitarsonemus erato sp. nov., is described from female, male and larval specimens collected from the odoriferous glands of the Australian gum-tree bug Amorbus rhombifer (Westwood, 1842). We summarise the hosts and distributions of each species, provide updated keys, and speculate that species of Coreitarsonemini are largely restricted to the tropics and host species that persist as adults year-round.

Many predatory mites of the subfamily Hypoaspidinae are important biological control agents of pest organisms. Here, an Illumina HiSeq platform was used to sequence the complete mitochondrial (mt) genome of Cosmolaelaps hrdyi. The mt genome is a circular molecule of 15,437 bp (GenBank number: OR643715), and a total of 37 genes were identified. The first codon in all 13 protein-coding genes (PCGs) is ATN. With the exception of the stop codon of ND3, which was TAG and the incomplete codon of ATP8, the stop codon of the remaining 11 PCGs was TAA. All tRNAs had typical cloverleaf secondary structures, with the exception of trnS₁ (AGN). A strong AT nucleotide bias (81.75%) and positive skew in both AT (0.026) and GC (0.252) were observed across the whole mt genome of C. hrdyi. Positive AT skew and GC skew were detected in all genes but the two rRNA genes. A phylogenetic tree of 29 mite species (Dermanyssiae) was constructed using mt genome sequences by the maximum likelihood method. A close relationship between Laelapidae and Varroidae was confirmed by the phylogenetic analysis.

This paper provides an updated checklist of eriophyoid mites found in China, including 1340 named species and a new synonym: Calvittacus spectabilus Yin, Lu, Liu & Xue, 2022, synonym of Vittacus bougainvilleae (Keifer, 1959). The top ten speciose genera are Aceria (81 species), Tetra (71 species), Diptilomiopus (68 species), Phyllocoptes (58 species), Diptacus (57 species), Tegolophus (53 species), Aculus (52 species), Rhyncaphytoptus (50 species), Calepitrimerus (50 species), and Epitrimerus (42 species). In addition, we provided the Chinese name for each eriophyoid mite species.

Saraphia siamensis gen. nov. & sp. nov. (Acari: Eriophyoidea) from Mammea siamensis (Miq.) T. Anderson in Thailand is described, illustrated. We provide a geometric morphometric analysis based on different geoghraphic populations. Additionally, we report Vasates spondiasi Boczek & Chandrapatya, 1989, a new record from M. siamensis. No visible damaging symptom was observed for both eriophyoid mite species, indicating that they are vagrants on the underside of leaves.