Neacomys rosalindae

Karyotype: 2n = 48 and FN = 50. Autosomal complement: two small metacentric pairs, and 21 acrocentric pairs (one large, and the remaining medium to small decreasing in size). Sex chromosomes: X, a medium submetacentric; Y, a small acrocentric (Sánchez-Vendizú et al. 2018, pp. 16, Fig. 7A).