Murina suilla (Temminck, 1840)

Bumrungsri, Sara, Harrison, David L., Satasook, Chutamas, Prajukjitr, Amorn, Thong-Aree, Siriporn & Bates, Paul J. J., 2006, A review of bat research in Thailand with eight new species records for the country, Acta Chiropterologica 8 (2), pp. 325-359 : 348-349

Murina suilla (Temminck, 1840)

Brown tube-nosed bat

Vespertilio suillus Temminck, 1840: 224, pl. 56; Tapos, Java.

New Material

PSU-M 05.4 (field no. SB030519.23), ♂, 19 May 2003, Bala Forest , Hala-Bala Wildlife Sanctuary , Wang District, Narathi- wat Province, 05°48’09”N, 101°49’45”E. PSU-M 05.5 (field no. SB031019.4), ♂, 19 October 2003, Namsai Ranger Station , Hala Forest , Hala-Bala Wildlife Sanctuary , Yala Province, 06°04’00”N, 101°22’00”E.

PSU-M 05.13 (field no. SB041217.2), ♂, 17 December 2004, Headquarters of Ton Nga-chang Wildlife Sanctuary , Song- khla Province, 06°56’N, 100°14’E. All specimens collected by S. Bumrungsri and members of the Hala-Bala bat research team.

Taxonomic Notes

This is a small, tube nosed bat with a forearm length in Thailand of 30.4–30.8 mm (Table 4). The dorsal pelage is brown, intermixed with golden hair tips; the roots are dark grey. Ventrally, the hair roots and tips are very pale, almost white (Fig. 2c). There is a well developed emargination on the posterior margin of each ear. Each wing is attached to a point close to the base of the claw of the outer toe. The dorsal aspect of the tail membrane and the toes are hairy, buffy brown to orange buff in colour. The skull has a small, shallow rostrum relative to the size of the braincase. The sagittal and lambdoid crests are scarcely evident. The first upper incisor (I 2), which has a second- ary cusp, is small with a crown area about one third that of the second (I3). I3 is situat- ed postero-lateral to I2, such that I2, which is the same height as I3, is visible when viewed laterally. The upper canine (C1) ex- ceeds the second upper premolar (P4) in height and is about two thirds the crown area. The first upper premolar (P2) is much reduced, its crown area is one third and its height about half of P4. The lower canine (C 1) is about equal in height and slightly ex- ceeds the crown area of the second lower premolar (P 4). The first lower premolar (P 2) is about one third the crown area of the sec- ond (P 4). The talonids of the first (M 1) and second (M 2) lower molars are about equal in crown area to the trigonids.

Species n GTL CBL CCL ZB BB PC C–M 3 M 3 – M 3 C 1 – C 1 C–M 3 M Hipposideros ridleyi 1♂ 20.1 18.1 17.5 9.6 9.0 2.9 6.6 6.4 – 7.0 12.6 Myotis hermani 1 ♀ 21.2 20.2 19.1 14.1 9.2 4.3 8.7 9.1 6.3 9.7 16.5 Pipistrellus stenopterus 1♂ 16.2 15.9 15.4 11.9 9.1 5.0 5.8 7.8 6.2 6.3 13.2 Hesperoptenus tomesi 1? 21.2 20.5 20.0 15.3 10.6 5.6 7.9 9.9 7.8 9.0 16.4 Murina suilla 3♂♂ 14.5 – 14.8 13.0 – 13.7 12.6 – 13.0 8.3 – 8.5 7.1 – 7.3 4.0 – 4.4 4.7– 5.1 5.0 –5.4 3.4 – 3.5 5.0 – 5.3 10.0 – 10.1 14.8, 0.3 13.4, 0.3 12.8, 0.2 8.4, 0.1 7.2, 0.1 4.2, 0.2 4.9, 0.2 5.2, 0.2 3.5, 0.1 5.2, 0.2 10.1, 0.1 Murina aenea 2 ♀♀ 17.2, 17.8 15.8, 16.0 15.0, 15.4 9.7, 10.2 7.8, 8.0 4.5, 4.6 5.7, 6.1 5.9, 6.2 4.5, 4.8 6.1, 6.3 11.9, 12.7 Kerivoula pellucida 1♂ 14.6 13.3 12.9 8.2 7.1 3.0 5.5 5.1 3.1 5.8 10.4 Mops

mops 1♂ 21.5 19.1 18.4 13.4 10.4 4.7 7.4 9.6 5.3 8.0 15.2

Distribution and Ecological Notes

Murina suilla is found in Malaysia, Su- matra, Nias Island, Java and Borneo. Its dis- tribution in Sulawesi, Peleng Island and New Guinea is doubtful ( Corbet and Hill, 1992). These are the first records from Thailand.

The specimen from Bala Forest was cap- tured using a harp trap set across a trail in primary lowland evergreen forest. Three further individuals (forearm length of 30.1–31.7 mm), which were not taken as voucher specimens, were collected in adja- cent areas, both along trails and over streams (5–12 m wide). A single individual was collected in Hala Forest on the edge of pristine forest, which was adjacent to the large dam of a reservoir. In Ton Nga-chang, M. suilla was captured along a nature trail in late successional forest that had been se- lectively logged 20–30 years previously. The elevations of these sites were less than 200 m a.s.l.