Taxonomy of the Genus Koch (Acari: Tetranychidae): Reconsideration of Subgenera and Updated Species Groups.

The present study aimed to revise the subgeneric divisions of the genus based on persistent characteristics and to propose species groups in each subgenus to further ease the identification of species. As a result, only three subgenera, based on literature, are recognized, viz, subgenus Koch (duplex setae present on leg tarsi III-IV), subgenus Livschits and Mitrofanov (duplex setae absent on leg tarsi III-IV), and subgenus Livschits and Mitrofanov (duplex setae present only on leg tarsus III). The analysis based on morphological characters and available COI sequences on the GenBank database did not resolve the phylogenetic relationship of species, and likewise, no support could be found for the proposed subgeneric divisions.

Species groups, subgroups, and key to world species of the genus Trägårdh, 1915 (Acari, Prostigmata, Tetranychidae).

After a comprehensive taxonomic assessment of descriptions/ illustrations of all known (118) species of the spider mite genus Trägårdh (Acari: Prostigmata: Tetranychidae), five species groups are proposed based on the number of tactile setae on tibia II in female, i.e., with four setae (four spp.

The genus Berlese (Acari, Prostigmata, Tetranychidae): taxonomic assessment and a key to subgenera, species groups, and subgroups.

A comprehensive taxonomic assessment of the most agriculturally important and highly diverse spider mite genus, Berlese (Acari: Tetranychidae) was performed. The sub-generic division, species groups, doubtful species, species complexes and the interpretation of a key generic character are discussed. Based on the orientation of the male aedeagus, only two subgenera, namely Berlese (aedeagus downturned) and Tuttle & Baker (aedeagus upturned), are valid in the genus .

Eriophyoid mites (Acari: Prostigmata) from Brazil: an annotated checklist.

The superfamily Eriophyoidea constitute a group of phytophagous mites of particular economic and evolutionary interest due to their intimate association with host plants and their agricultural importance as harmful or beneficial organisms. Studies on the Eriophyoidea fauna in Brazil started in the early 1900s with botanical works on cecidias and were continued with researchers looking for and reporting on eriophyid mites causing damage to agricultural crops. Therefore, in this annotated checklist, we compile information from just over a century on eriophyid mites reported or described from Brazil.

Emendations and updates to "Annotated catalogue of Stigmaeidae (Acari: Prostigmata), with a pictorial key to genera".

An update on "Annotated catalogue of Stigmaeidae (Acari: Prostigmata), with a pictorial key to genera" published in October 2016 is presented. The type species of the genus Ledermuelleriopsis Willmann, 1951 is changed from Ledermuelleriopsis triscutata to Ledermuelleriopsis plumosa Willmann, 1951. Newly published species and new information on old species are provided.

Tetranychidae database for Brazil: a website for distribution and information on spider mites (Acari).

We present a database regarding the distribution of spider mites (Acari, Tetranychidae) in Brazil. It is available open access on the internet and hosted by the Department of Entomology and Acarology, ESALQ-USP, Piracicaba, São Paulo, Brazil, at www.lea.

Two new eriophyoid mite species (Trombidiformes: Eriophyoidea) from the cocoa tree, and a note on (Nalepa).

Two new eriophyoid mite species are described from the cocoa tree, Theobroma cacao L. (Malvaceae) - the Diptilomiopidae Davisella trevisani n. sp.

Annotated catalogue of Stigmaeidae (Acari: Prostigmata), with a pictorial key to genera.

Stigmaeidae is one of the most studied mite families in Acarology, with the number of described species increasing by 44 percent in the last twenty years. To summarize the taxonomic and biological research in this family we compiled a catalogue with annotated information to nomenclature, synonymies, type localities, type depositories, host/habitat, feeding habits (if applicable) and distribution of 577 species in 34 genera (up to 31 July 2016). We also provide an overview of the main revisions and reviews.

Complementary description of Colomerus novahebridensis Keifer (Acari, Eriophyidae), with a discussion about the constitution of the genus and its economic importance, and a tentative key to Colomerus Newkirk & Keifer species.

Colomerus Newkirk & Keifer, 1971 is an eriophyid genus described by Newkirk and Keifer about 43 years ago, that contains species from all continents, except Antarctica. They live mostly on dicotyledonous plants. Colomerus novahebridensis Keifer, 1977 was described from coconut (Cocos nucifera L.

Plant mites of the Dominican Republic, with a description of a new species of Petrobia (Tetranychina) Wainstein, 1960 (Acari, Prostigmata, Tetranychidae) and a key to the species of this subgenus.

Fourteen mite species of plant-associated mites of the suborder Prostigmata are reported from the Dominican Republic. Four of these refer to new findings for the country, including Petrobia (Tetranychina) hispaniola n. sp.

South American spider mites: new hosts and localities.

In order to contribute to taxonomic information on Tetranychid mites (Acari: Tetranychidae) in South America, surveys were conducted in Brazil (15 States and the Federal District) and Uruguay (one Department); 550 samples of 120 plant species were collected. Tetranychid mite infestations were confirmed in 204 samples, and 22 species belonging to seven genera of the Bryobiinae and Tetranychinae subfamilies were identified on 58 different host plants. Thirty-six new plant hosts were found in Brazil, South America, and worldwide for the following species: Eutetranychus banksi (McGregor); Mononychellus tanajoa (Bondar); Oligonychus anonae Paschoal; O.