Abstract
The fauna of quill mites of the family Syringophilidae (Acari: Prostigmata: Cheyletoidea) of the Palaearctic Region is comprehensively revised. The external morphology of adults and immature instars was studied in detail. All known 118 species groupedin 32 genera and 2 subfamilies occuring in the Palaearctic Region are examined and keyed. Critical reviews of host associations, occupying habitat, and distribution are given for all mite species. Six new genera are proposed, 4 in the subfamily Syringophilinae: Betasyringophiloidus gen. nov., Krantziaulonastus gen. nov., Paraniglarobia gen. nov., Pteroclidisyringophilus gen. nov.; and 2 in the subfamily Picobiinae: Neopicobia gen. nov., and Rafapicobia gen. nov. Twenty five new species are described inthe subfamily Syringophilinae: Aulobia leucostictus sp. nov., Aulonastus lanius sp. nov., A. loxius sp. nov., A. anthus sp. nov., A. fringillus sp. nov., Betasyringophiloidus saxicolus sp. nov., B. phoenicurus sp. nov., Krantziaulonastus oryzivorus sp.nov., K. lonchurus sp. nov., Meitingsunes columbicus sp. nov., Neoaulonastus remizus sp. nov., N. caligatus sp. nov., N. aegithalos sp. nov., N. picidus sp. nov., N. riparius sp. nov., Selenonycha chradriiformicus sp. nov., Syringophiloidusphilomelosus s
NSTL