304.

Krau Woolly Bat

Kerivoula krauensis

French: Kérivoule de Krau / German: Krau-Wollfledermaus / Spanish: Querivoula de Krau

Taxonomy. Kerivoula krauensis Francis, Kingston & Zubaid, 2007,

“Kuala Lompat, Krau Wildlife Reserve, Pahang, peninsular Malaysia (3°43’N, 102°10’E).”

See K. hardwicku. Kerivoula krauensis might be closely related to K. hardwickii or K. minuta . Monotypic.

Distribution. Scattered localities in extreme S Thailand, Peninsular Malaysia, C & S Sumatra, and WC & EC Borneo.

Descriptive notes. Head—body 38-40 mm, tail 34-43 mm, ear 12-15 mm, hindfoot 7- 5 mm (one specimen), forearm 28-34 mm; weight 2-4- 5 g. Fur is long and woolly. Dorsal pelage is shiny gold brown to light buffy brown (hairs dark brown with golden brown to duller buffy-brown tips); venter is whitish buff (hairs dark gray basally with grayish white to grayish brown tips). Ears are moderately short and broadly funnel-shaped, with concavity on posterior margin near tips; tragusis tall and pointed, curving slightly outward. Ears are pale pinkish gray and slightly darker at edges, and face, nose, and lips are pinkish to purplish brown, with yellowish gland on either side of muzzle. Membranes are dark brown, and wing attaches on foot just below base offirst toe. Uropatagium is sparsely covered dorsally in long, dark brown, golden-tipped hairs. Skull is generally similar to that of Hardwicke’s Woolly Bat (K. hardwickit) but slightly smaller, with more inflated braincase, shorter rostrum, shorter canines, and more rounded upper premolars; braincase is large and globular; C! is narrow and moderately tall; and I* and I’ are unicuspid, I* being small and short at less than one-half the height of I*.

Habitat. Understories of lowland dipterocarp forests (Malay Peninsula), peat swamp forests and lowland dipterocarp forests (Borneo), and montane logged forests (Sumatra), typically close to sea level but up to elevations of ¢. 1600 m (Sumatra).

Food and Feeding. No information.

Breeding. In central Peninsular Malaysia, female Krau Woolly Bats in breeding condition have been caught mostly in February—June (limited sampling in November-December) and two lactating females in August.

Activity patterns. In southern Thailand, call shape is steep FM sweep, with start frequencies of 205-241 kHz (mean 224-8 kHz), end frequencies of 44-6 kHz (51-3 kHz), and peak frequencies of 136-8-166-8 kHz (146-7 kHz). In Peninsular Malaysia, average start frequency was 174 kHz, end frequency was 50 kHz, and duration was 2-4 milliseconds, and in Borneo, a single individual had start frequency of 210 kHz, end frequency of 50 kHz, peak frequency of 137 kHz, and duration of 2-3 milliseconds.

Movements, Home range and Social organization. No information.

Status and Conservation. Classified as Data Deficient on The IUCN Red List. The Krau Woolly Bat is currently known from only seven localities spread over a wide area. It appears to be rare based on low capture rates butlikely has a more extensive distribution.

Bibliography. Chiozza (2008d), Douangboubpha, Bumrungsri, Satasook et al. (2016), Douangboubpha, Bumrungsri, Soisook etal. (2014), Francis et al. (2007), Huang, J.C.C. et al. (2014), Struebig et al. (2017).