The checklist of hard ticks in Egypt was updated with 44 tick species. Hosts, geographical distribution, and pathogens of the hard ticks collected from domestic animals were also reviewed based on our investigation and published data from 1915 to 2021. Lower Nile Valley (including the Delta) had the largest number of hard tick species from domestic animals with 20 different species. Cattle and dromedary camels were infested by 19 hard tick species. Nineteen described species from livestock in Egypt were confirmed to transmit one or more pathogens. Hyalomma dromedarii, Hy. excavatum and Rhipicephalus annulatus carried the highest number of pathogens with 23, 20, and 19 pathogens, respectively. This review recommends further surveillance programs for hard ticks and tick-borne pathogens of domestic animals in the country.

Riccardoella (Proriccardoella) reaumuri Fain & van Goethem, 1986 has been reported in terrestrial mollusks in France and the Japanese Archipelago. The purpose of this study was to describe two new subspecies of this mite species from Japan based on their morphological characters. Mites were sampled from terrestrial mollusks at 13 locations in Japan from Oct. 16, 2016 to Nov. 13, 2020. The sampled mites and specimens deposited in museum were also used for morphological observations. As a result of principal component analysis (PCA) and cluster analysis based on morphology of dorsal setae on idiosoma and solenidia on palptarsus and tarsus I and II, mite specimens from France and Japan were divided into three groups: Group 1 (mites sampled in France), Group 2 (Okinawajima Is.) and Group 3 (the area from Kyushu Is. to Hokkaido Is.). The solenidia shapes also differed between the groups. We propose that the mites of each of the three groups should be defined as subspecies based on these morphological differences. Our phylogenetic tree of the two subspecies based on amino acid sequences of the mitochondrial cytochrome c oxidase subunit 1 (CO1) confirmed that these Japanese mites are members of the genus, family Ereynetidae.

Fifteen species of Agistemus Summers were previously reported from Brazil. Herein, Agistemus bahiensis sp. nov. is described and illustrated from specimens collected on Annona muricata L. (Annonaceae), Euterpe oleracea Mart. and Polyandrococos caudescens (Mart.) Barb. Rodr. (Arecaceae) at the Southern Coastal Region of the state of Bahia, Brazil, between April 2007 and August 2017. The new species mainly differs from all other similar species by having a pattern of longitudinal striae as a band of dashes on the hysterosomal shield. It can also be distinguished by the dorsal setae measurements and the distances between them, being all dorsal setae of equal size in the new species (22–29), except for ve, which exceeds 30 (29–35), with none of them reaching the bases of the subsequent setae. Dorsal setae are always greater than 30 and ve is always greater than 55 (56–80) in the other five similar species. A key to Brazilian species of the genus is provided.

Date-locality-host records for 15 mite species of 4 families are presented for Hungary, Germany and Austria. These data include two new records for Europe, viz. Tydeus kabutarahangensis Khanjani et Ueckermann, 2003 and Tydeus meshkinensis André, Ueckermann et Rahmani, 2010, two new records for Hungary: Tydeus kabutarahangensis and Tydeus meshkinensis, two for Austria: Tydeus lindquisti (Marshall, 1970) and Tydeus meshkinensis, and one for Germany: Lorryia teresae Carmona, 1970. Details on habitats and plant associations are also provided.

One of the farmers' significant challenges is controlling mites and preventing their damage, especially the two-spotted spider mite Tetranychus urticae. Meanwhile, the insecticides introduced for controlling T. urticae need to be investigated for direct and indirect effects. This study investigated the low concentrations (LC₁₀ and LC₃₀) impacts of spiromesifen on the life table parameters of T. urticae and its natural enemy, Neoseiulus californicus. The results indicate that spiromesifen caused significant effects on all parameters of the T. urticae life table through successive generations. The insecticide also had significant effects on N. californicus life table parameters. Therefore, spiromesifen was effective against successive generations of T. urticae, but we caution against its use under incidence of N. californicus.

An integrative taxonomy based on traditional morphological method, molecular systematics and geometric morphometrics was tested to identify two species of torrenticolid mites, which are similar in morphology. A new species of the water mite genus Torrenticola from China, T. nipponicella Gu & Guo sp. nov., was described and illustrated in this paper. The descriptions included morphological features, molecular data, geometric morphometric data, and a discussion of their taxonomic status and integrative taxonomy. Meanwhile, some potential taxonomic characters of those species were analyzed by canonical variate analysis and principal component analysis. Those analyses of two landmark configurations revealed important taxonomical characters in dorsal (dorsoglandularia 1–3) and ventral shields (coxoglandularia 2, 4, ventroglandularia 3).

Dermacentor pavlovskyi Olenev, 1927 is the type tick species of subgenus Asiacentor Filippova & Panova, 1974 in the genus Dermacentor, which is only found in Xinjiang of China and Central Asia. In the present study, the males and females of D. pavlovskyi from Xinjiang were firstly characterized in detail morphologically by scanning electron microscopy and molecularly by partial 16S rDNA, COI and ITS2 sequences. The results of phylogenetic analysis indicated that D. pavlovskyi and Palaearctic subgenus Dermacentor (s. str.) species clustered to form a phylogenetic lineage, and their genetic distances were smaller than those between Palaearctic and non-Palaearctic subgenus Dermacentor (s. str.) species. Among Palaearctic subgenus Dermacentor (s. str.), D. pavlovskyi seems to be much closer to D. raskemensis, D. marginatus and D. niveus than to D. silvarum, D. nuttalli, D. everestianus and D. reticulatus. We also suggested that D. montanus, as the closest relative species of D. pavlovskyi, should be further investigated.

A total of 12 mite species of the family Ameroseiidae have been reported from Egypt. The objectives of this paper are to report an additional species, Kleemannia pavida (Koch), from that country and to present complementary descriptions of seven of those species, namely Ameroseius aegypticus El-Badry, Nasr & Hafez, Kleemannia kosi El-Badry, Nasr & Hafez, K. nova Nasr & Abou-Awad, K. wahabi Ibrahim & Abdel-Samed, K. pavida, K. plumosa (Oudemans) and Sertitympanum zaheri (El-Badry, Nasr & Hafez), based on the examination of specimens from Egypt. Within this context, the males of K. nova, K. wahabi and S. zaheri are described for the first time. A key to all the ameroseiid species recorded from Egypt is provided.

This paper reports two new species of genus Neoscirula, namely, N. bambus Chen & Jin sp. nov. from Guangxi Zhuang Autonomous Region and N. pananensis Chen & Jin sp. nov. from Zhejiang province, which are described and illustrated. A key to adult females of Neoscirula species of the China is provided.