Myotis horsfieldii

Overview & Synopsis

Myotis horsfieldii (Temminck, 1840) Horsfield’s myotis New records New to Sumatra; Lampung Province: Way Canguk Forest. New material Three individuals were collected as voucher specimens. Lampung Province: Way Canguk Forest, 1♂, 2♀♀ (MZB 35750–35752). Remarks It is a medium grayish-brown Myotis species (FA = 36.4–40.2 mm, n = 6) with wing membrane attached to the fifth metatarsal about 2 mm from the ankle. P 3 is completely inline with or partially lingual to the toothrow. The crown areas of P 3 and P 3 are one-third to two-thirds that of P 2 and the first lower premolar (P 2), respectively. Three individuals were captured flying low over a slow-moving section of the Way Canguk River. Additional records from Gimbar 2 cave in Way Canguk Forest were in the MZB (MZB 31484, 35013, 35014). In the study area, it can be distinguished from other known Myotis species by the wing attachment position. Comparing with all known Myotis species of the Sunda Shelf, the body size, wing attachment point, and dental characteristics are most comparable to that of M. horsfieldii (Bates and Harrison, 1997; Kingston et al., 2006), which has not been yet recorded from Sumatra (Simmons, 2005).