Zygodontomys sp. 2
Karyotype: 2n = 82 and FN = 94. Autosomal complement: seven biarmed pairs (two large and five medium to small pairs), and 33 medium to small acrocentric pairs decreasing in size. Sex chromosomes: X, a large submetacentric; Y, a small submetacentric (Bonvicino et al. 2003, pp. 124, Fig. 2A; Bonvicino et al. 2009).
Unnamed generic taxon, currently named Handleyomys
These species its provisional position as a member alfaroi group because no new genus to encompass these taxa has yet been described, alfaroi (Allen 1891), chapmani (Thomas 1898), melanotis (Thomas 1893), rhabdops (Merriam 1901), rostratus (Merriam 1901), and saturatior (Merriam 1901) (Weksler 2015a).