Nectomys magdalenae (Thomas, 1897)

Moreira, Camila Do Nascimento, Ventura, Karen, Percequillo, Alexandre Reis & Yonenaga-Yassuda, Yatiyo, 2020, A review on the cytogenetics of the tribe Oryzomyini (Rodentia: Cricetidae: Sigmodontinae), with the description of new karyotypes, Zootaxa 4876 (1), pp. 1-111 : 39

Nectomys magdalenae (= N. m. grandis)

Karyotype: 2n = 34 and FN = 40. Autosomal complement: one large metacentric pair, three large submetacentric pairs, and 12 acrocentric pairs (two medium and the remaining small). Sex chromosomes: X, a medium acrocentric; Y, a small submetacentric ( Gómez-Laverde et al. 1999, pp. 663, Fig. 1 ). Another diploid number of 32 was mentioned by Bonvicino & Weksler (2015) as unpublished data obtained by M. L. Bueno.

Figures

FIGURE 1. Collection localities of Oryzomyini species analyzed in this work. (1) Claúdia, Mato Grosso state; (2) and (3) Rio Japurá, Amazonas state; (4) and (5) Rio Içá, Amazonas state.