title: Subterranean biota of the European part of Russia: A review
abstract: The endogean flora and fauna of European Russia, including those of the northwestern Caucasus, but excluding those of Crimea, presently comprise at least 389 species or subspecies (some still unidentified) from 229 genera (a few still unidentified), 150 families, 75 orders, 48 classes and 25 phyla, among which 96 species or subspecies represent presumed stygo-or troglobionts. The taxonomically most diverse phylum is Arthropoda which encompasses the bulk of the fauna, in particular due to crustac
journal: Invertzool