(Dobson, 1877)
Sind Serotine bat
External characters (Table 84)
This is a small Eptesicus with a relatively long tail which is subequal to the head and body length (Ena1). Forearm length averages 36.1 mm (35.4-36.9 mm). The muzzle is broad and flat with prominent, nearly naked pararhinal glandular swellings. The ears are small with narrowly rounded tips; the tragus of each is well developed, about half the height of the pinna. The pelage is buffy brown on the dorsal surface and paler on the ventral surface (Ena2). The hair tips and bases are uniformly coloured. The interfemoral and wing membranes, ears and naked areas of face are mid-brown, distinctly darker than the pelage.
Cranial characters
The skull is smaller than that of E. bottae (BW25) with an average condylo-canine length of 12.0 mm (11.7-12.2 mm). The braincase is relatively small and flattened in lateral view as compared to that of E. bottae . The sagittal crest is absent and the lambdoid crests are low but distinct. The slightly convex supraoccipital forms the most posterior part of the skull. The postorbital constriction is narrow and the supraorbital ridges are well developed. The zygomatic arches are delicate and without dorsal projections; they are widely flared anteriorly and posteriorly. The palate is short and broad. The tympanic bullae are relatively large and exceed the breadth of the basioccipital. The coronoid process of each half mandible does not greatly exceed the condyle in height; in consequence the posterior border of the coronoid declines more gently than that of E. bottae .
Dentition
- Upper toothrow length (C-M3) averages 4.6 mm (4.4-4.8 mm). The first upper incisor (I2) is without a secondary cusp. The second incisor (I3) is relatively well developed, attaining half the height of I2. The upper premolar (PM4) is relatively small; its crown area slightly exceeds half that of M1; in E. bottae , it is in excess of three-quarters. M3 is about half the crown area of M2 and with three well developed commissures.
- The first lower premolar (pm2) is relatively small; it is crowded between the canine and the second premolar (pm4). m1 and m2 are subequal in size. m3 has the talonid only slightly reduced.
Variation
All specimens from the region are referred to the nominate subspecies E. n. nasutus .