310.

Clear-winged Woolly Bat

Kerivoula pellucida

French: Kérivoule diaphane / German: Transparentfligel-Wollfledermaus / Spanish: Querivoula de alasclaras

Taxonomy. Vespertilio pellucidus Waterhouse, 1845,

Philippines.

Phylogenetic position of K. pellucida is uncertain. It might be related to the African radiation of Kerivoula or to K. picta rather than to other Asiatic Kerivoula . Monotypic.

Distribution. Thai-Malay Peninsula, Sumatra, Borneo except EC & SE, Java, and Philippines (Palawan, Cebu, Bohol, Mindanao, and Jolo Is).

Descriptive notes. Head-body 35-4 41- 4 mm, tail 40-51- 8 mm, ear 13- 2-17 mm, hindfoot 5-4-7- 8 mm, forearm 29- 32.1 mm; weight 3-5-5- 5 g. Dorsal pelage is pale orange-brown (hairs with pale grayish white bases); venter is grayish white. Face is pale orangish to pinkish. Membranes and ears are pale orange-brown and nearly completely translucent. Ears are large and virtually naked, with convex anterior margins, rounded tips, and concavityjust below tips on posterior borders; tragusis narrow and tall, with virtually straight anterior margin except for very slight convexity neartip, and has concave posterior margin with small hooked basal lobe. Wings are attached at base of outertoes, and calcar is long. Compared with Hardwicke’s Woolly Bat ( K. hardwickii), skull has narrower interorbital width, with generally more elongated palatal length and narrower cranial length (both with some overlap in measurements), and shape of anterior region to rostrum is more flattened.

Habitat. Primarily understories of primary and secondary lowland forests from sea level up to elevations of ¢. 1200 m.

Food and Feeding. No information.

Breeding. Female Clear-winged Woolly Bats have one young per pregnancy.

Activity patterns. The Clear-winged Woolly Bat roosts in dead leaves of small shrubs in the Philippines and banana leaves in Indochina. In Peninsular Malaysia, calls are steep FM sweep, with start frequencies of 159-2-188-8 kHz (mean 178-5 kHz), end frequencies of 30-4-78-2 kHz (58-5 kHz), peak frequencies of 57-6-138-4 kHz (96-4 kHz), and durations of 1-4-4 milliseconds (2-3 milliseconds).

Movements, Home range and Social organization. The Clear-winged Woolly Bat roosts in small groups.

Status and Conservation. Classified as Near Threatened on The IUCN Red List. The Clear-winged Woolly Bat is widespread and fairly common, but lowland primary forests are being deforested across its distribution.

Bibliography. Bumrungsri et al. (2006), Douangboubpha et al. (2016), Esselstyn, Widmann & Heaney (2004), Francis (2008a), Francis, Rosell-Ambal, Kingston & Nusalawo (2008), Hasan & Abdullah (2011), Heaney et al. (1998), Hill (1965b), Khan (2008), Khan et al. (2010), Kingston et al. (1999).