New species and a record of myrmecophilous mites of the families Neopygmephoridae and Microdispidae (Acari: Heterostigmatina: Pygmephoroidea) associated with Lasius umbratus (Hymenoptera: Formicidae) from Western Siberia, Russia Author Khaustov, Alexander A. text Zootaxa 2016 4137 3 375 390 journal article 10.11646/zootaxa.4137.3.5 bf2fa89f-5107-4e10-baad-a9d715d18cd3 1175-5326 256512 625148B8-9560-4386-9BC9-E9D474EA10A0 Genus Petalomium Cross, 1965 Type species: Parapygmephorus ( Petalomium ) krczali Cross, 1965 , by original designation.