Small Mammals Of The Mayo River Basin In Northern Peru, With The Description Of A New Species Of Sturnira (Chiroptera: Phyllostomidae) Author Velazco, Paúl M. Division of Vertebrate Zoology (Mammalogy) American Museum of Natural History Author Patterson, Bruce D. Integrative Research Center Field Museum of Natural History text Bulletin of the American Museum of Natural History 2019 2019-04-05 2019 429 1 69 journal article 0003-0090 Peropteryx kappleri Peters, 1867 VOUCHER MATERIAL: El Diamante : 3 adult males ( FMNH 203512 ; MUSM 39109 , 39110 ) ; see table 3 for measurements. IDENTIFICATION: We consulted the descriptions and measurements of Peropteryx kappleri provided by Sanborn (1937) , Goodwin and Greenhall (1961) , Husson (1962 , 1978 ), Jones and Hood (1993) , Simmons and Voss (1998) , and Lim et al. (2010) . Two subspecies are currently recog- nized: P. k. kappleri (Central America to Ecuador , Venezuela , Guianas, and southeastern Brazil ) and P. k. intermedius (southern Peru ) ( Hood and Gardner, 2008 ). Our specimens conform in all respects to previous descriptions of the nominate subspecies: brown wings, ears not connected by a band of skin, lateral pterygoid pits small and shallow, and posterior border of the mesopterygoid extension level with the anterior border of the basisphenoid and lateral pterygoid pits, and a posterior cusp present on the anterior upper premolar. Our Mayo River basin voucher material is also encompassed by the range of measurements reported for the nominate subspecies.