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Collado, R.; Schmelz, R. M. (2000). 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. Amazoniana-Limnologia et Oecologia Regionalis Systemae Fluminis Amazonas. 16(1-2): 223-235.