Myotis cf. borneoensis Hill and Francis, 1984

Huang, Joe Chun-Chia, Jazdzyk, Elly Lestari, Nusalawo, Meyner, Maryanto, Ibnu, Maharadatunkamsi, Wiantoro, Sigit & Kingston, Tigga, 2014, A recent bat survey reveals Bukit Barisan Selatan Landscape as a chiropteran diversity hotspot in Sumatra, Acta Chiropterologica 16 (2), pp. 413-449 : 434

Myotis cf. borneoensis Hill and Francis, 1984

Bornean whiskered myotis

New record

New to Sumatra. Lampung Province: Way Canguk Forest.

Remarks

This is a medium-large brown Myotis species (FA = 45.8 mm) with wing membrane attached to the base of the toes. One adult male was collected by previous researchers from Gimbar 2 cave in Way Canguk Forest (MZB 35012). Comparing with known species on the Sunda Shelf, this bat most likely belongs to the montivagus species complex, which has not been recorded yet in Sumatra. Based on differences in forearm length and craniodental characters, Görföl et al. (2013) recognized four species in the montivagus species complex from Asia, including M. borneoensis , M. federatus , M. montivagus , and M. peytoni . Only M. borneoensis (Borneo) and M. federatus (Peninsular Malaysia) were reported from the Sunda Shelf, with M. montivagus known from South China and North Myanmar, and M. peytoni from India ( Görföl et al., 2013). Our sample exhibits characteristics of each species except M. federatus , but we tentatively assign it to M. borneoensis based on cranial characters (separation between P 2 and P 4 and the length of the anteorbital bridge) and distribution. Further comparison and molecular analyses are necessary to clarify the taxonomic status of this species. In our study area, it can be easily identified from other known Myotis species by its larger forearm length.