A review of bat research in Thailand with eight new species records for the country Author Bumrungsri, Sara Department of Biology, Prince of Songkla University, Hat Yai, Songkhla, Thailand, 90112 E-mail: sara. b @ psu. ac. th Author Harrison, David L. Harrison Institute, Bowerwood House, 15 St Botolph’s Road, Sevenoaks, Kent, TN 13 3 AQ, Great Britain Author Satasook, Chutamas Department of Biology, Prince of Songkla University, Hat Yai, Songkhla, Thailand, 90112 E-mail: sara. b @ psu. ac. th Author Prajukjitr, Amorn Department of Biology, Prince of Songkla University, Hat Yai, Songkhla, Thailand, 90112 E-mail: sara. b @ psu. ac. th Author Thong-Aree, Siriporn Peat Swamp Forest and Hala-Bala Wildlife Research Station, P. O. 6, Wang, Narathiwat, Thailand, 90160 Author Bates, Paul J. J. Harrison Institute, Bowerwood House, 15 St Botolph’s Road, Sevenoaks, Kent, TN 13 3 AQ, Great Britain text Acta Chiropterologica 2006 2006-12-01 8 2 325 359 journal article 21492 10.3161/1733-5329(2006)8[325:arobri]2.0.co;2 91cacb4e-dc01-4157-af9a-ebdc303ce86f 1733-5329 3944593 Pipistrellus stenopterus ( Dobson, 1875 ) Narrow-winged pipistelle Vesperugo stenopterus Dobson 1875: 470 ; Sarawak , Borneo. New Material PSU-M 05.2 (field no. SB030508.6), ♂ , 8 May 2003 , Ai-kading stream, Bala Forest , Hala-Bala Wildlife Sanctuary , Wang Dis- trict, Narathiwat Province , 05°48’9”N , 101°49’15”E , collected by S. Bumrungsri and members of the Hala-Bala bat research team . Taxonomic Notes This is a large and robust pipistrelle bat. The specimen from Thailand has a forearm length of 38.7 mm ( Table 4 ). Its pelage is dark brown (based on the wet specimen). In the wing, the fifth metacarpal ( 32.2 mm ) is noticeably shorter than the fourth (36.9 mm). The ears are fleshy; each has a clubshaped tragus, which is expanded in the middle. The feet are large, longer than half the tibia length. The skull is robust with a flattened rostrum and a large nasal notch. The zygomata are slender and fragile. A sagittal crest is present and the lambdoid crests are well developed. The anterior palatal emagination extends posteriorly to the level of the front of the second premolar (P 4 ). The first upper premolar (P 2 ) is reduced, intruded from the toothrow, and compressed in a recess between the canine T ABLE 4. Four external measurements (in mm) and body mass (in g) of 10 specimens of seven bat species recently collected in Thailand , including the length of forearm (FA), tail (TAIL), ear (E) and foot (HF). For Murina suilla , the range, mean and standard deviation are given

Species	n	FA	TAIL	E	HF	MASS
Hipposideros ridleyi	1♂	47.9	27.1	23.2	7.6	9.0
Myotis hermani	1♀	60.0	54.0	19.8	19.8	24.2
Pipistrellus stenopterus	1♂	38.7	37.1	15.7	9.8	22.5
Murina suilla	3♂♂	30.4–30.8	26.0–35.4	11.2–12.2	6.1–8.4	3.5–4.0
30.6, 0.2	30.8, 4.7	11.8, 0.5	7.1, 1.2	3.7, 0.3
Murina aenea	2♀♀	34.7, 35.7	31.6, 34.2	12.7, 13.7	7.6, 8.2	6.9
Kerivoula pellucida	1♂	30.1	46.2	15.8	9.0	6.0
Mops mops	1♂	43.3	33.6	19.3	17.7	29.0

(C 1 ) and P 4 . The lower premolars are com- pressed; the first (P 2 ), which is 1.5 times larger in crown area than the second (P 4 ), is slightly extruded, its tip does not point ver- tically upwards but obliquely outwards. Over the years, this species has been vari- ously referred to the genus Nyctalus as well as Pipistrellus (for comments, see Corbet and Hill, 1992 and Simmons, 2005 ). Distribution and Ecological Notes Recorded from Borneo, Sumatra, Ma- laysia, Riau Island and Singapore ( Corbet and Hill, 1992 ), and Mindanao Island ( Koopman, 1993 ). This is the first record for Thailand . In Bala Forest, a single individual was caught in the early evening (ca. 19:00h) in a mist net set about 5 m above the surface of a running stream. The stream, which was about 15 m wide, flowed through a valley of pristine lowland forest. In Malaysia , it is thought to be a gregarious species and is commonly found roosting in hollow trees or the roofs of houses ( Medway, 1969 ).