Holochilus sciureus Wagner, 1842 VOUCHER MATERIAL: Waqanki: 1 adult female (MUSM 39257); see table 21 for measurements. IDENTIFICATION: We consulted descriptions and measurements of Holochilus sciureus provided by Anderson (1997), Patton et al. (2000), Hice and Velazco (2012), Gonçalves et al. (2015), and Prado et al. (2017b). No subspecies are currently recognized in H. sciureus (Prado et al., 2017b). H. sciureus is characterized by the following characteristics: small size, head and body length 123–193 mm, tail length 115–178 mm; dorsal fur yellowish brown, usually mixed with black; sides are paler; ventral pelage whitish; supraorbital crests well developed; incisors opisthodont; and molars tetralophodont (Gonçalves et al., 2015; Prado et al., 2017b). Our specimen conforms to previous descriptions of the species, and measurements fall within the range of size variation previously documented. REMARKS: Our single specimen was captured in a grassland. Lareschi and Velazco (2013) reported the mite Gigantolaelaps mattogrossensis from our specimen.

Published as part of 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), pp. 1-69 in Bulletin of the American Museum of Natural History 2019 (429) on page 46