Larval Psephenidae (Coleoptera: Byrrhoidea) of Thailand: Annotated List and Illustrated Key to Genera Author Shepard, William D. Author Sites, Robert W. text The Coleopterists Bulletin 2019 2019-06-21 73 2 259 282 http://dx.doi.org/10.1649/0010-065x-73.2.259 journal article 10.1649/0010-065X-73.2.259 1938-4394 5454617 Mataeopsephus Waterhouse, 1876 Fig. 14 , Map E Discussion. Mataeopsephus ( Fig. 37 ) was treated by Lee and Jäch (1995) and Lee et al. (2003) . It contains 12 species distributed in India , Russia , China , Taiwan , Korea , Japan , and Vietnam . Larvae of many species have been described. Adults of some species have been collected at lights. Our new country records are from northern Thailand . Material Examined. Chiang Rai Province : Stream from Nomtok Khun Kon , 524 m , 19°51’N 99°39’E , Vitheepradit , Prommi , Setaphan (1L) . Nan Province : Amphur Bo Kluea , Ban Bo Kluea Tai , Nam Mang , gravel, 663 m , 19°09’N 101°09’E , 22 April 2003 , L-476, AV, Prommi , Setaphan (1L); same locality, 17 April 2009 , L-1044, Sites , Vitheepradit and Prommi (4L) . Phayao Province : Amphur Ciang Kham Ban Korg , Nam Mae Lao , 521 m , 19°24’N 100°24’E , L-470, AV, Prommi , Setaphan (5L) . Tak Province : Amphur Tha Song Yang , stream, 27.3 km NW of Tha Song Yang on Hwy 105, 17°34.367’N 97°57.192’E , Sites , Vitheepradit and Prommi , L-1054 (1L) .