Myotinae, Tate, 1942

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 : 447-448

C. Keys to species of subfamily Myotinae

1.1. Wing membrane with conspicuous black and orange coloration; FA 56–60 mm ...................... Myotis hermani *

1.2. Wing membrane brown or gray-based; FA ≤ 46 mm ........................................................ 2

2.1. Wing membrane attached at the base of toes............................................................. 3

2.2. Wing membrane attached to ankle or side of feet.......................................................... 7

3.1. FA 27–30 mm; 2 pairs of upper premolars; fur short and dense; BM 4.0– 6.5 g ........................ Myotis ridleyi *

3.2. FA> 30 mm; 3 pairs of upper premolars................................................................. 4

4.1. FA 42–46 mm; BM 9–14 g .......................................................... Myotis cf. borneoensis #

4.2. FA ≤ 39 mm; BM ≤ 8 g .............................................................................. 5

5.1. P 3 is in line with the toothrow; FA 33–36 mm ................................................ Myotis muricola

5.2. P 3 is displaced inwards of the toothrow.................................................................. 6

6.1. FA 34–39 mm ............................................................................. Myotis ater *

6.2. FA 31–35.5 mm ........................................................................... Myotis sp. 1 #

7.1. Wing attached to the side of foot; FA 33–42 mm ............................................. Myotis horsfieldii #

7.2. Wing attached to ankle or tibia or wing membrane narrows near ankle and forms a prolonged strip inserting to the metatarsus............................................................................................. 8

8.1. P 3 in line (or nearly) with the toothrow; wing attached to ankle or tibia; FA 39–40 mm ............... Myotis adversus *

8.2. P 3 is more or less intruded from toothrow................................................................ 9

9.1. P 3 commonly strongly reduced or absent. If present, completely intruded from toothrow and adjacent to the interior edge of P 2 and P 4; P 2 and P 4 in contact or nearly so; P 3 crown area is 0–1/3 of P 2; wing membrane attaches to ankle; FA 38–43 mm .................................................................................. Myotis hasseltii *

9.2. P 3 present, less reduced, only partially intruded from toothrow; P 2 and P 4 completely separated; P 3 crown area c.1/3 of P 2; wing membrane narrows near ankle and forms a prolonged strip inserting to the metatarsus; FA 38–39 mm ... Myotis sp. 2 #