Belladrilus (Santomesia) auka n. sp. (Oligochaeta, Ocnerodrilidae) from Argentina

From Cordoba Province, Argentina the Ocnerodrilidae Belladrilus (Santomesia) auka n. sp. is described by dissections and serial histological sections. The species is well characterised by the tumid T-shaped male porophore in XVll with an anterior half-moon depression and a posterior cross thickening. The seminal grooves are convergent and thin in the anterior half, straight and wider in the posterior half.

Key words: Oligochaeta, Ocnerodrilidae, Cordoba, Argentina, Anatomy, Taxonomy.