Morphological investigation of three Tetramitus spp. which are phylogenetically very closely related: Tetramitus horticolus, Tetramitus russelli n. comb. and Tetramitus pararusselli n. sp.
Keywords: گونه جدید; Vahlkampfiidae; New combination; New species; Cyst morphology; Tetramitus; 5.8S rDNA;