Small mammals from the Seasonally Dry Tropical Forests of the Huallaga river basin and new records for San Martín department, Peru Author Ruelas, Dennisse Author Pacheco, Victor text Check List 2021 2021-06-07 17 3 877 894 http://dx.doi.org/10.15560/17.3.877 journal article 10.15560/17.3.877 1809-127X Nectomys apicalis Peters, 1861 Material examined . PERU • Ojos de Agua private conservation area, Picota Province ; 06°50′41″S , 076°27′ 54″W ; 383 m elevation; 07.IX.2015 ; D. Ruelas leg.; snaptrap; 1 ♀ , MUSM 43909 ; juvenile . Identification . Our specimen is juvenile (age class 1, following Voss 1991) and was recognized by the following combination of morphological characters: dorsal fur uniformly grayish brown; underparts pale neutral gray moderately washed; dark brown tail, pinnae entirely gray; hindfoot with five plantar pads and plantar surface squa- mate; narrow and deep posterolateral palatal pits; opisthodont incisors; interparietal deep relative to its width. Morphological characters of this specimen agree with those described by Bonvicino and Weksler (2015) and with specimens in the MUSM collection ( Cusco Department: MUSM 9190–9192; Madre de Dios Department: MUSM 9211–9213). External measurements: TL: 250 mm , T : 130 mm , F: 36 mm , E: 21 mm . Weight: 50 g . Remarks. Nectomys apicalis is widely distributed in eastern Ecuador , eastern Peru , and northwestern Brazil but considered rare (Bonvicino and Weksler 2015). These authors also suggest that Nectomys apicalis may represent a species complex that needs study. In Peru , it is distributed in the Selva Baja and Sabana de Palmera ecoregions ( Pacheco et al. 2009 ). Additional records. Tarapoto, San Martín Province (MUSM 5062); Huicungo, Mariscal Cáceres Province (MUSM 24398).