Pedonais crassifaucis n.gen., n.sp. (Naididae) and Bothrioneurum righii n.sp. (Tubificidae), two new tropical soil-dwelling species of "aquatic" oligochaetes (Clitellata, Annelida) from Central Amazonia

Abstract

Two new species of so-called aquatic Oligochaeta are described from soil and litter samples originating from terra firme sjtes of the Amazonian primary rain forest. Bothrioneurum righii n.sp. (Tubificidae) is characterized by posterior dorsal chaetae with very large dista1 teeth and much reduced proximal teeth. The new genus Pedonais (Naididae) resembles Allonais but differs from it in the absence of hair chaetae, in the similarity of dorsal and ventral chaetae, and in the presence of well-developed pharyngeal glands.