An adult male of Amblyomma parvum Aragão, 1908 was collected from a biologist performing field work in Key Largo, Monroe County, Florida, USA, on 30 November 2004. Intermittent surveys from 2004–2009, including examination of wildlife and tick drags, failed to detect additional specimens of A. parvum in Key Largo. This is the first collection of a free-living A. parvum in the United States, although it has been found there once before on a quarantined animal entering from Paraguay.

All stages of the hard tick Amblyomma boeroi Nava, Mangold, Mastropaolo, Venzal, Oscherov and Guglielmone were found for the first time on two carcasses of the Chacoan peccary, Catagonus wagneri, in Paraguay, one from a site located 100 km west of Mariscal Estigarribia (S 21°29′, W 61°22′), and the other from Destacamento Teniente Martinez (S 20°55′, W 59°50′), Boquerón Department.

The effect of temperature on the development of the predatory mite Bdella tropica Atyeo preying on Xenylla longauda Folsom (Collembola: Hypogastruridae) was examined in the laboratory. The duration of different developmental stages of B. tropica became shorter as the temperature increased from 20°C to 32°C. The optimum development temperature was between 24°C and 28°C. The mite could not complete development at 35°C or 18°C.

A better knowledge of the mite fauna that lives on weeds among crop plants is relevant to the determination of appropriate crop management, as these plants may support reservoirs and/or be alternative hosts for predatory or phytophagous mites important to the cultivated plants. In this study, a survey of the mite fauna from 20 weed species found in four plantations of Physic nut (Jatropha curcas L.) (Euphorbiaceae) in Brazil was carried out between May 2008 and May 2009. Mites belonging to the Mesostigmata, Prostigmata and Astigmatina (= Astigmata) were identified and, altogether, 38 species were found. Three species of plants stood out as hosts of the greatest variety of mites: Glycine wightii Wight & Arn. (18 species), Sida santaremnensis Monteiro (16) and Tridax procumbens L. (17). Glycine wightii and S. santaremnensis supported similar ranges of predators and phytophages, while T. procumbens stood out by hosting the largest number of predatory species compared to phytophages. The most commonly found mite was Pronematus sp. (Iolinidae), occurring on 18 of the 20 plants analyzed.

A new species of Adamystidae is described, Adamystis iranoturanianensis sp. nov. These mites were collected from soil, humus and litter in the southern parts of the Kamfiruz Region in Fars, Iran. This family comprises 16 species including the new species described herein. The new species differs from the other members of this family by: the fused, punctate and reticulate endopodal shield; possessing two pairs of plates in the genital region; and the unique coxal formula 1-3-2-2. This is the first record of this family from Iran.

A new mite species, Adamystis alvandicus sp. nov., is described and illustrated from female specimens collected from soil under Spiny Hawthorn trees, Crataegus aronia (L.) (Rosaceae), near Alvand Mountain in Hamedan province, Iran. The new species is distinguished by lacking lens like structures, having one pair of eyes, a smooth dorsal shield and coxae I–IV 2-3-3-2. All other Adamystis have three setae on coxisternae IV.

Calyptostoma gorganica Saboori & Soukhtsaraii sp. nov. (Acari: Calyptostomatidae) is described and illustrated from larvae ectoparasitic on Limonia caucasica Lackschewitz, 1940 (Diptera: Tipulidae) from Shast Kalateh forest, Gorgan, Golestan Province, Northern Iran. It is the first report of the representatives of the superfamily Calyptostomatoidea from the Middle East. Calyptostoma latiseta and C. simplexa are not synonymous with C. velutinum. A key to larval species of Calyptostoma of the world is presented.

In this study, rDNA-ITS2 was sequenced and analyzed to investigate the effect of Wolbachia on the rDNA of four populations of Tetranychus urticae Koch. The result showed that all four populations of T. urticae were infected with two strains of Wolbachia. They are wUrtOri1 (HM486515–HM486517) and wUrtCon1 (HM486518), belonging to the Ori group and Con group of B supergroup, respectively. There was one mutation site among 645 sites for the ITS2 fragments. All the sequenced ITS2 were classified into two haplotypes. The diversity analysis of ITS2 sequences of individuals showed that infection by Wolbachia did not significantly change the diversity of rDNA. A neutrality test using ITS2 indicated that the population of T. urticae has remained stable during evolution and is not off the Hardy-Weinberg equilibrium.

A new species of the genus Raphignathus Dugès (Acari: Raphignathidae), R. larestanensis sp. nov. is described and illustrated from fibers of date palm in Larestan, Fars province, southern Iran.

A new mite species, Ledermuelleriopsis dogani sp. nov. is described and illustrated based on material collected from Euonymus japonicus Thunberg (Celastraceae) and Pinus pinea L. (Pinaceae) at Marvdasht, Fars province. The dorsal setae of the new species are clavate-spinose and the coxisternal shields are smooth. A key to all known world species of the genus is given.

A new species, Neophyllobius bamiensis sp. nov. is described herein. The new species was collected from the bark of date trees (Phoenix dactylifera L.) (Arecaceae) in the vicinity of Bam city, Kerman province, southeast Iran. A key to the Iranian species is provided.

Eutarsopolipus jacobi sp. nov. (Acari: Podapolipidae), subelytral parasite of Diplocheila impressicollis Dejean (Coleoptera: Carabidae), is described from Washtenaw and Huron Counties, Michigan, U.S.A. Relationships with 13 previously described species in the myzus group of Eutarsopolipus are discussed and keys are provided to six species in the myzus group in the Western Hemisphere. This is the first record of a species in the myzusgroup parasitizing the carabid genus Diplocheila in the Western Hemisphere.

Eutarsopolipus osunaharae sp. nov. (Acari: Podapolipidae), subelytral parasite of Diplocheila zeelandica(Redtenbacher) (Coleoptera: Carabidae), is described from three localities in Japan. The relationships with seven previously described species in the pterostichi group of Eutarsopolipus are discussed and keys are provided to species in the pterostichi group. This is the first record of Eutarsopolipus in the pterostichi group in Japan and the first record of a species in this group parasitizing the carabid genus Diplocheila.

Three new species of oribatid mites, Epilohmannia crassisetosa sp. nov., Furcoppia cattienica sp. nov. and Unguizetes asiaticus sp. nov., are described. All three are from dark loamy soil of Lagerstroemia forest in the Cat Tien National Park (southern Vietnam). The species E. pallida pacifica Aoki and U. sphaerula (Berlese) are newly recorded in Vietnam. Diagnostic keys to the Vietnamese species of Epilohmannia and Unguizetes are presented. Mochlozetes atypicus Mahunka, 1982 is reinstated in the genus Unguizetes.

A new fossil species, Trhypochthonius lopezvallei sp. nov. (Trhypochthoniidae), is described based on one specimen preserved in amber from the San Just outcrop (Teruel Province, Spain) believed to be Albian in age. A comparison with Recent and fossil Trhypochthoniidae is given. A new name, Sachalinbates, is proposed to replace Sachalinella (a fossil oribatid genus described from Sakhalin Paleocene amber) which is preoccupied.