c. Genus Pipistrellus

1.1. FA 38–43 mm; BM 18–20 g; wing narrow at 5th finger, length of 5th finger (metacarpal + phalanges) subequal to length of metacarpal of 4th finger............................................................ Pipistrellus stenopterus

1.2. FA ≤ 36 mm; BM <7 g; length of 5th finger significantly> metacarpal of 4th finger............................. 2

2.1. FA 33–36 mm; HF 7.2 mm; BM 3.8–7 g ................................................ Pipistrellus javanicus

2.2. FA 29–32 mm; HF 5–6 mm; BM 3–6 g .................................................... Pipistrellus tenuis *