Akodon aerosus Thomas, 1913

Velazco, Paúl M. & Patterson, Bruce D., 2019, Small Mammals Of The Mayo River Basin In Northern Peru, With The Description Of A New Species Of Sturnira (Chiroptera: Phyllostomidae), Bulletin of the American Museum of Natural History 2019 (429), pp. 1-69 : 44-45

Akodon aerosus Thomas, 1913

VOUCHER MATERIAL: El Diamante: 1 adult female ( MUSM 39253 ) ; Tingana: 1 adult female ( MUSM 39254 ), 2 adult males ( FMNH 203654 ; MUSM 39255 ) ; Waqanki: 5 adult females ( FMNH 203466 , 203464 , 203652 ; MUSM 39251 , 39252 ), 1 adult male ( MUSM 39250 ) ; see table 20 for measurements.

IDENTIFICATION: We consulted descriptions and measurements of Akodon aerosus provided by Myers (1990), Anderson (1997), Jiménez et al. (2013), Pardiñas et al. (2015), and Pardiñas and Cuéllar Soto (2017). No subspecies are currently recognized in A. aerosus ( Pardiñas and Cuéllar Soto, 2017) . Our Mayo River basin voucher specimens present the diagnostic characteristics of the species: dorsal pelage dark brown, dense, and short; ventral pelage slightly paler than dorsum; ears, forefeet, hind feet, and tail blackish brown; rostrum short and broad; supraorbital ridges smooth and nonbeaded; incisive foramina long, widely open, and with smoothly rounded edges; and broad mesopterygoid fossa ( Pardiñas et al., 2015; Pardiñas and Cuéllar Soto, 2017). Measurements of our specimen fall within the range of measurements reported for the species.

REMARKS: All of the Mayo River basin specimens were captured either in grassy fields or cultivated areas. A new species of laelapinae mite, Androlaelaps aerosus , was described by Lareschi and Velazco (2013) based on mites present on Akodon aerosus specimens from the Tingana and Waqanki localities.