Necromys lenguarum Thomas 1898 Necromys lenguarum Thomas 1898, Ann. Mag. Nat. Hist., ser. 7, 2: 271. Type Locality: Paraguay, Presidente Hayes Dept., Chaco Boreal, Waikthlatingwaialwa. Vernacular Names: Paraguayan Akodont. Synonyms: Necromys tapiropoanus (J. A. Allen 1916). Distribution: Chacoan formations of E Bolivia, W Paraguay, and possibly N Argentina (see Galliari et al., 1996). Discussion: Taxonomic status unresolved—demoted to subspecies under Akodon obscurus (Cabrera, 1961) or placed in full synonymy with Bolomys l. lasiurus (Macêdo and Mares, 1987), or generally if equivocally recognized as a species (Anderson, 1997; Anderson and Olds, 1989; Galliari and Pardiñas, 2000; Reig, 1987). Anderson (1997) maintained tapiropoanus, type locality in Mato Grosso, W Brazil, as a subspecies for Bolivian populations. Also see remarks under N. lasiurus.

Published as part of Wilson, Don E. & Reeder, DeeAnn, 2005, Order Rodentia - Family Cricetidae, pp. 955-1189 in Mammal Species of the World: a Taxonomic and Geographic Reference (3 rd Edition), Volume 2, Baltimore :The Johns Hopkins University Press on page 1130, DOI: 10.5281/zenodo.7316535