Myotis simus Thomas, 1901

Myotis simus Thomas, 1901 View in CoL

Figure 4T

Material examined. PERU • El Quinillal private conservation area, Bellavista Province ; 07°04′15″S, 076°23 ′

59″W; 316 m elevation; 01.IX. 2015; D. Ruelas leg.; mist nets; 1 ♀, MUSM 43884, adult.

Identification. The following combination of morphological characters distinguishes this species: relatively short conical face that lacks skin folds or appendages; relatively small eyes, small ears; thin and elongated tail fully embedded within the uropatagium reaching the free edge and longer than the hind legs; short ears, ex- tending forward halfway from the eye to nostril; barely evident antitragal notch; pointed tragus, slightly curving outward above and convex below, with a small triangu- lar lobule at the outer base; naked dorsally uropatagium without a fringe of hairs along the trailing edge; few scattered hairs on the basal portion of the uropatagium; calcar with a small keel; third upper premolar crowded to lingual side; sagittal and occipital crests present. These characters agree with those described by Moratelli (2012) and Díaz et al. (2016) and are in agreement with specimens in the MUSM collection ( Ucayali Department: MUSM 24593, 30022, 40490, 44223). We present exter- nal measurements in Table 2.

Remarks. Myotis simus occurs from the Amazon basin of Colombia, Bolivia, Brazil, Ecuador, Peru, and farther south to Argentina and Paraguay ( Wilson 2008). In Peru, M. simus ocurrs in the Yungas and Selva Baja ecoregions ( Pacheco et al. 2009). The new record of extends this species’ geographic range by 410 km northwest of the nearest previous record at Oxapampa, Pasco department ( Wilson 2008).

Additional to these five species, we confirmed the pres- ence of two rare species in San Martín department.