Rhinolophus borneensis Peters, 1861

Rhinolophus borneensis Peters, 1861: 709; Labuan island, north Borneo, MALAYSIA (Collector unknown; Type unknown) [149].

Rhinolophus chaseni Sanborn, 1939: 38; Pulo Condore = Con Son Island, south VIETNAM (C. B. Kloss, collector; BM(NH) 21.10.8.3) [150].

Rhinolophus borneensis chaseni [9].

Common English name: Bornean Horseshoe Bat

Barcode Index Number: DNA barcodes of R. borneensis are associated with a BIN, BOLD: AAC 3741, but there are no barcodes from Peninsular Malaysia. DNA barcodes recorded as R. chaseni are not from Peninsular Malaysia and are associated with a BIN, BOLD:AAB4878, which also contains a single DNA barcode of R. shameli (ABRVN 329-06).

Remarks: R. chaseni was previously recognised as a subspecies of R. borneensis ( R. b. chaseni) [9] occurring in Peninsular Malaysia while the the nominal subspecies R. b. borneensis occurred in Borneo [151]. However, Francis et al. [4] reported that DNA barcodes (COI mtDNA) of R. borneensis and R. chaseni did not cluster together as conspecific (see Fig 3 in [4]). Likewise, Kruskop [152] reported “about” 13% divergence in COI mtDNA between R. chaseni from Vietnam and R. borneensis from Borneo. However, due to the lack of any DNA barcodes from Peninsular Malaysia we could not further clarify the status of “ R. borneensis” in Peninsular Malaysia. Consequently, we tentatively retained the name R. borneensis in this checklist pending further research.

IUCN status: Least Concern

Recorded at: Pahang: Pulau Tioman [79]; Perlis: Wang Pinang [153]. According to Khan et al. [32], R. borneensis is likely to be very rare in Peninsular Malaysia.