Rhinolophus borneensis Peters 1861

FAISAL ALI ANWARALI KHAN, VICKI J. SWIER, SERGIO SOLARI, PETER A. LARSEN, BESAR KETOL, WAHAP MARNI, SIVANATHAN ELLAGUPILLAY, MAKLARIN LAKIM, MOHAMMAD TAJUDDIN ABDULLAH & ROBERT J. BAKER, 2008, USING GENETICS AND MORPHOLOGY TO EXAMINE SPECIES DIVERSITY OF OLD WORLD BATS: REPORT OF A RECENT COLLECTION FROM MALAYSIA, Occasional Papers of the Museum 281, pp. 1-30 : 10

Rhinolophus borneensis Peters 1861

Bornean Horseshoe Bat (Local name not available)

Specimens examined (5).—Monggis: TTU 108228 (GenBank EU521608 ); Kubah NP: TTU 108308; Mt. Penrisen: TTU 108385, TTU 108388, TTU 108393.

Type locality.— Malaysia (Borneo), Sabah , Labuan Island.

Malaysian distribution.—Recorded from Peninsular Malaysia (Perlis, Kampung Juara, and Tioman Island ) and Borneo.

Remarks.— Megaphyllus species group (Csorba et al. 2003). Rhinolophus borneensis is distinguished from other similar species ( R. stheno , R. celebensis , and R. malayanus ) by its larger forearm size, narrower anterior swellings of upper skull, and the median septa of its lancet being wider than the middle pocket (Csorba et al. 2003; Francis 2008). In Kubah NP, we netted these bats near a small frog pond and also found them roosting inside a culvert. Orange and brown color forms were present within our specimens. Rhinolophus borneensis can be distinguished easily in Borneo as they do not occur in sympatry with species of similar external morphology such as R. stheno or R. malayanus . Despite a wide distribution, R. borneensis is locally rare in Peninsular Malaysia when compared to Borneo (SAMD). Low cyt- b genetic distance (0.3%) was observed within Bornean populations.