Abstract

Two new species of Eustigmaeus: E. bochkovi n. sp., collected from rotten log in Khabarovsky Kray, and E. grandis n. sp., collected from soil in Primorsky Kray, are described from Russia. The genus Paravillersia Kuznetsov, 1978 is considered as a junior synonym of Eustigmaeus Berlese, 1910; Paravillersia grata Kuznetsov, 1978 is considered as a junior synonym of Eustigmaeus ottavii (Berlese, 1910), E. ioanninensis Kapaxidi and Papadoulis, 1999 is considered as a junior synonym of E. pinnata Kuznetsov, 1977a, and Paravillersia jamaliensis Khaustov, 2014 moved to the genus Villersia Oudemans, 1927.

Highlights

  • IntroductionThe predatory mite family Stigmaeidae (Acari: Prostigmata) is the largest in the superfamily Raphignathoidea and includes about 598 species of 34 valid genera (Doğan et al 2015; Fan & Ueckermann 2016; Fan et al 2016; Khaustov 2016b; Paktinat-Saeij et al 2016; Stathakis et al 2016; Bingül & Doğan 2017; Bingül et al 2017; Doğan et al 2017; Khanjani et al 2017; Khaustov et al 2017; Nazari & Khanjani 2017; Akyol & Gül 2018; Da-Costa et al 2018; Rehman et al 2018; Khaustov & Tsurikov 2018)

  • The type materials of Eustigmaeus pinnatus and Paravillersia grata as well as specimens of Paravillersia grata and Eustigmaeus ioanninensis deposited in the collection of the Tyumen State University Museum of Zoology were examined

  • Eustigmaeus bochkovi n. sp. is remarkable because the presence of callosity located between endopodal plates of legs III and IV

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Summary

Introduction

The predatory mite family Stigmaeidae (Acari: Prostigmata) is the largest in the superfamily Raphignathoidea and includes about 598 species of 34 valid genera (Doğan et al 2015; Fan & Ueckermann 2016; Fan et al 2016; Khaustov 2016b; Paktinat-Saeij et al 2016; Stathakis et al 2016; Bingül & Doğan 2017; Bingül et al 2017; Doğan et al 2017; Khanjani et al 2017; Khaustov et al 2017; Nazari & Khanjani 2017; Akyol & Gül 2018; Da-Costa et al 2018; Rehman et al 2018; Khaustov & Tsurikov 2018). The genus Eustigmaeus Berlese, 1910 is the second largest genus with 128 species (Fan et al, 2016; Khaustov 2016b; Stathakis et al 2016; Karasu et al 2018; Khaustov & Tsurikov 2018). The new species are described in this paper and new generic and species synonymies are provided

Materials and methods
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