7.

Sumatran Little Mastift Bat

Mormopterus doriae

French: Molosse de Sumatra / German: Sumatra-Mastino-Fledermaus / Spanish: Morméptero de Sumatra

Other common names: Sumatran Mastiff Bat

Taxonomy. Mormopterus doriae K. Andersen, 1907,

“Soekaranda, Deli, N. W. Sumatra,” Indonesia.

This species is monotypic.

Distribution. Known only from type locality in NW Sumatra.

Descriptive notes. Tail 30 mm, ear 15-2 mm, hindfoot 9-8 mm, forearm 38 mm (type specimen). Color of type specimen could not be accurately assessed due to its condition, but it was darker above and grayer below. Type specimen was described as similar to Peters’s Little Mastuff Bat ( M. jugularis) in external, cranial, and dental characteristics and having gular gland and straight anterior ear margin—notched in the Mauritian Little Mastiff Bat ( M. acetabulosus). It differs from Peters’s Little Mastiff Bat in having larger gular sac (c.7-5 mm wide and c. 6 mm deep, twice as large as Peters’s Little Mastiff Bat), inner margins of ears touching (separate in Peters’s Little Mastiff Bat), medial ridge (“keel”) along ventral surface of braincase (basioccipital and basisphenoid bones), proportionately broader rostrum and braincase, more prominent supraorbital crests, thicker cingulum of C, and proportionately longer M, (two-thirds of M, in the Sumatran Little Mastiff Bat and one-half in Peters’s Little Mastiff Bat). Dental formulais11/3,C 1/1, P1/2, M 3/3 (x2) = 30.

Habitat. Type locality was below 250 m in elevation.

Food and Feeding. No information.

Breeding. No information.

Activity patterns. No information.

Movements, Home range and Social organization. No information.

Status and Conservation. Classified as Data Deficient on The IUCN Red List. The Sumatran Little Mastiff Bat has not been recorded again since its discovery.

Bibliography. Andersen (1907a), Hutson, Schlitter & Kingston (2016b).