Nectomys apicalis, also known as the western Amazonian nectomys,^[2] is a semiaquatic species of rodent in the genus Nectomys of family Cricetidae. It is found east of the Andes in Ecuador, Peru, and Bolivia, east into western Brazil; further to the east, it is replaced by N. rattus. It lives near watercourses in lowland tropical rainforest.^[1] Its karyotype has 2n = 38–42, and it probably actually represents several distinct undescribed species.^[2]

• Gómez-Laverde, M.; Rivas, B.; Weksler, M. (2017) [errata version of 2016 assessment]. "Nectomys apicalis". IUCN Red List of Threatened Species. 2016: e.T136756A115212191. Retrieved 23 December 2019.
• Musser, G. G.; Carleton, M. D. (2005). "Superfamily Muroidea". In Wilson, D. E.; Reeder, D. M. (eds.). Mammal Species of the World: A Taxonomic and Geographic Reference (3rd ed.). Johns Hopkins University Press. p. 1132. ISBN 978-0-8018-8221-0. OCLC 62265494.