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 Hesperoptenus tomesi Thomas, 1905 Large false serotine Hesperoptenus tomesi Thomas, 1905: 575 ; Malacca , Malaysia . New Material PSU-M 05.3, sex?, August 1993 , 30th km Kangkachan-Phanernthung Road , Kangkachan National Park , Phetchaburi Province, 12°54’00”N , 99°24’45”E , collected by S. Bumrungsri and Vichak Chimchome . Taxonomic Notes The description is based on the skull only as the skin is not available. The skull, which has a greatest length of 21.2 mm ( Table 5 ), compares favourably to the holotype . It is large and exceeds in size that of Hesperoptenus tickelli ( 17.2–19.9 mm — Corbet and Hill, 1992 ). It has prominent supraorbital ridges. Its posterior part is ele- vated. The well developed sagittal crest and lambdoid crests combine to make a high and posteriorly projecting lambda. The first upper anterior incisor (I 2 ) is large, both in crown area (with a transverse width of 1.3 mm) and crown height (2.0 mm). In H. tickelli , the comparable figures are 1.0– 1.1 mm , 1.5–1.8 mm , n = 4, respectively. The second upper incisor (I 3 ) is virtually flat but with a relatively large crown (transverse width of 1.0 mm). It is intruded within the toothrow, so that I 2 and the upper canine (C 1 ) are almost in contact. C 1 is large ( 1.7 mm in crown width and 4.5 mm in height: 1.4–1.6 mm and 3.1–3.7 mm , n = 4 respectively in H. tickelli ) and in contact with the upper premolar (P 4 ). The lower incisors are more robust than those of H. tickelli . The first lower premolar (P 2 ) is between one quarter and one third the crown area of the second (P 4 ). Distribution and Ecological Notes It is currently known from Sabah in Borneo and Malacca in peninsular Malaysia ( Medway, 1969 ; Corbet and Hill 1992 ; Koopman, 1993 ). This is the first confirmed record from Thailand . In Kangkachan National Park, a single individual was collected on the ridge of a hill in a mist net set over a small pool. The surrounding habitat was pristine lower evergreen montane forest.