Acuminate Horseshoe Bat (Rhinolophus acuminatus)


HB: 55-60; T: 25; FA: 47-51; E: 18-19; HF:11-12.

There are 2 colour phases. The dark or grey phase has a dorsal pelage greyish brown with hairs tipped with silver, with the underparts pale grey. The red or russet phase has the upperparts reddish brown, with the underparts somewhat paler. The sella is parallel sided; the lancet is constricted in the centre. The connecting process is tall, triangular in outline, with the straight sides converging to a point. There is a distinct expansion on the nasal region of the skull, forming a lump against which the nose leaf rests. The middle premolar is outside the tooth row, and the first and third lower premolars may be in contact. The canines are sturdy and wide apart.

Range Description:

This species occurs from Thailand east to Lombok (Indonesia), Borneo (Sabah, Malaysia) and the Philippines, where it is known only from the Palawan Faunal Region: recorded from Balabac, Busuanga and Palawan (Heaney et al. 1998).
Countries: Native:
Cambodia; Indonesia; Lao People's Democratic Republic; Malaysia; Myanmar; Thailand; Vietnam


 The population status of the species is uncertain, though apparently it is locally common and occurs in small colonies (Esselstyn et al. 2004, Heaney et al. 1998).
Population Trend: Unknown

 Habitat and Ecology:

The ecology and habitat of this species are unknown in the Philippines (Heaney et al. 1998). The only known roosts in the Philippines are in caves, and the species has been found from 60-250 m asl (Esselstyn et al. 2004). It occurs in lowland dipterocarp forest on Borneo (Payne et al. 1985). The species forages in primary and secondary forest, as well as bamboo thickets (Esselstyn et al. 2004). In Myanmar the species was found in a small colony roosting under a building (P. Bates pers. comm.). It is tolerant of urban areas.
Systems: Terrestrial

 Major Threat(s):

There are no major threats to this species although disturbance of caves is a localized threat.

 Conservation Actions:

 The species occurs in protected areas within its range.