01175nas a2200133   4500008004100000245017800041210006900219300001200288490000700300520065600307100002200963700002000985856003601005       2013                        eng d00a<i>Vermipharyngiella unica</i> gen. et sp. n. (Plathelminthes, Tricladida, Paludicola), a new planarian genus and species from Lake Baikal with peculiar pharyngeal structure0 aiVermipharyngiella unicai gen et sp n Plathelminthes Tricladida   a167-1760 v923 a<p>An illustrated description of a new monotypical genus of endemic Baikal planarians, Vermipharyngiella gen. et sp. n., is provided. The representatives of the new genus differ from those of all other known freshwater planarian genera by a very unusual structure of the pharynx. There are three wellseparated, compactly arranged muscular layers in the wall of the pharyngeal canal: subepithelial circular, medial longitudinal and inner circular. Such arrangement of the muscular layers has not been found in any of four freshwater triclad families known. The problem of the attribution of the new genus to one of these families is discussed.</p>
1 aPorfiriev, A., G.1 aTimoshkin, O.A.  uhttp://lin.irk.ru/pdf/12150.pdf