A new erigonine genus and species from the Russian Far East (Aranei: Linyphiidae), with notes on chaetotaxy

A new genus, Erigokhabarum gen.n., with Erigokhabarum articulatum sp.n. as the type species, is described based on a single male from the Khabarovsk Province, Russian Far East. The palpal structure of E. articulatum sp.n. somewhat resembles that of a few other genera like Silometopus Simon, 1926, Trichoncus Simon, 1884 and partly Parasisis Eskov, 1984, but it cannot be assigned to any of them. Four main formulae of leg chaetotaxy in Erigoninae, i.e. 1111, 2211, 2221, 2222, are discussed; the chaetotaxy being shown to be a sufficiently stable and important taxonomic character in the subfamily.