Isothrix negrensis Thomas 1920

Isothrix negrensis Thomas 1920, Ann. Mag. Nat. Hist., ser. 9, 6: 277.

Type Locality: Brazil, Acajutuba, lower Rio Negro, near its mouth.

Vernacular Names: Rio Negro Brush-tailed Rat.

Distribution: NC Brazil along the Rio Negro and Rio Solimoes.

Discussion: Included in bistriata until recognized as distinct species based on sequence, chromosomal, and morphological differentiation (Bonvicino et al., 2003 a). Karyotype has 2n=60, FN=112 (Bonvicino et al., 2003 a).