Oecomys bicolor (Tomes, 1860)

Voss, Robert S., Fleck, David W. & Jansa, Sharon A., 2019, Mammalian Diversity And Matses Ethnomammalogy In Amazonian Peru Part 5. Rodents, Bulletin of the American Museum of Natural History 2024 (466), pp. 1-180 : 62

Oecomys bicolor (Tomes, 1860)

Figures 26A, 26D, 28A

VOUCHER MATERIAL (N = 22): Jenaro Herrera (MUSM 16000), Nuevo San Juan (AMNH 268257, 268258, 272674, 272710, 272724, 272727, 273064, 273096; MUSM 11208, 11211, 11213, 13315–13319, 15333, 15334), San Pedro (UF 30469), Santa Cecilia (FMNH 87203, 87204). Pavlinov (1994) reported additional specimens from Jenaro Herrera in the ZMMU that we have not seen.

UNVOUCHERED OBSERVATIONS: None that can be reliably identified as such given the presence of other externally similar species in our region (see below).

OTHER SPECIMENS EXAMINED (N = 66): Brazil — Acre, Igarapé Porongaba on right bank of Rio Juruá ( MVZ 200958 , 200959 ), Nova Vida on right bank of Rio Juruá ( MVZ 200963 ), opposite Igarapé Porongaba on left bank of Rio Juruá ( MVZ 200882 ), Sobral on left bank of Rio Juruá ( MVZ 200962 ) ; Amazonas, Barro Vermelho on left bank of Rio Juruá ( MVZ 200884 , 200964 ), Colocação Vira Volta on left bank Rio Juruá ( MVZ 200956 ), Igarapé Nova Empresa on left bank of Rio Juruá ( MVZ 200966 , 200967 ), Sacado on right bank of Rio Juruá ( MVZ 200897 ) ; Ecuador — Morona-Santiago Gualaquiza ( BMNH 7.1 .1.96 [holotype]) ; Orellana, 35

18 Although Oecomys concolor was listed as expected in our region by Escobedo-Torres (2015), the known distribution of O. concolor is restricted to the Río Negro basin of eastern Colombia, southern Venezuela, and northern Brazil; it is not known to occur in Peru ( Carleton and Musser, 2015).