Two New Species of the Genus Neoabbottiella (Rhodophyta, Halymeniales) from the Russian Far Eastern Seas

The results of taxonomic revision of the red algal genus Neoabbottiella from the Russian Far Eastern seas are presented and the differences of Neoabbottiella from the other blade-like red algae are discussed. Descriptions of three species are given, including N. araneosa (type species) and two newly described species, N. valentinae sp. nov. and N. decipiens sp. nov. The newly described species differ from N. araneosa in morphogenesis, structure, and localization of gonimoblasts on the blade, as well as some features of vegetative anatomy. A key to the species of Neoabbottiella, illustrations of their external and internal structures and some data on their distribution and ecology are given.