iii. Key to species of Rhinolophidae (* denotes records in Sumatra but not in BBSL, # marks records from BBSL only)

1.1. Sella with lateral lappets.............................................................................. 2

1.2. Sella without lateral lappets........................................................................... 4

2.1. Nose and ears light yellow; FA 45–58 mm .............................................. Rhinolophus trifoliatus

2.2. Nose and ears dark gray or brown...................................................................... 3

3.1. FA 58–80 mm; BM 26–37 g ............................................................ Rhinolophus luctus

3.2. FA 37–44 mm; BM 7–10 g ........................................................... Rhinolophus sedulus *

4.1. Anterior noseleaf large and covers entire upper lip; sella wide and long; FA 39–50 mm .......... Rhinolophus macrotis *

4.2. Anterior noseleaf small and does not cover entire upper lip; sella narrow and short............................... 5

5.1. Connecting process triangular, pointed at tip.............................................................. 6

5.2. Connecting process round at tip or reduced............................................................... 7

6.1. FA 44–53 mm; BM 10–16 g ........................................................ Rhinolophus acuminatus

6.2. FA <44 mm; BM ≤ 8 g ........................................................ Rhinolophus lepidus / pusillus

7.1. Connecting process relatively strong with a rounded central part.............................................. 8

7.2. Connecting process weak and not rounded in the central part................................................ 11

8.1. Sides of sella concave at middle; FA 46–55 mm ............................................ Rhinolophus affinis

8.2. Sella only slightly tapering, sides nearly parallel; FA ≤ 48 mm ............................................... 9

9.1. TL 21–29 mm; FA 38–47 mm ............................................. Rhinolophus borneensis / celebensis #

9.2. TL <20 mm ...................................................................................... 10

10.1. TL 17–20 mm; FA 41–48 mm .......................................................... Rhinolophus stheno *

10.2. TL 15.9 mm; FA 39.9 mm (n = 1)......................................................... Rhinolophus sp. 2 #

11.1. Connecting process distinctly arched; FA 42–54 mm ...................................... Rhinolophus arcuatus *

11.2. Connecting process flat; FA 40.4 mm (n = 1)............................................... Rhinolophus sp. 1 #