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 Undescribed Eubrianacinae Fig. 22 , Map A Discussion. Larvae of this type were found in a variety of localities, mostly in the western half of the country. This genus differs from all other described genera by the sutural configuration on the prothorax ( Fig. 22 ) and the lack of a gap between paratergites 6 and 7. This larva is not included in the key because it might represent a new genus or an undescribed member of an existing genus not known from Thailand . Material Examined. Chiang Mai Province : creek at Chiang Dao , Wildlife Research Center , 520 m , 19°21’N 98°55’E , 26 Aug 2002 , CMU team (1L); same locality, 25 V 2002, coll. Arthit (1L). Kampaeng Phet Province : Klong Lan Natl. Park , Namtok Klong Lan , 310 masl , 16°07’N 99°16’E (1L); Mae Wong National Park , Kaeng Pa Nang Koi , gravel, 290 m , 16°02’N 99°13’E , 7 April 2003 , L-451, Sites, AV, Prommi, Setaphan (8L). Kanchanaburi Province : Amphur Sai Yok, Thong Pha Phum Forest Restoration Station, Mae Nam Noi, 204 m , 14°31’N 98°37’E , 10 April 2003 , L-462, colls: UMC & CMU teams (9L); Amphur Sangkhla Buri , Huay Song Ka Lia , gravel stream, 204 m , 15°3’N 98°26’E , L-340, UMC and CMU teams (7L); Amphur Thong Pha Phum , Huay Koeng Kra Wia , stream, 325 m , 14°55’N 98°40’E , 11 April 2002 , L- 331, UMC and CMU teams (1L); same locality, 12 May 2003 , L-527, Vitheepradit , Prommi , Ferro (7L); Amphur Thong Pha Phum , Huay Ou Long , stream, 139 m , 14°46’N 98°40’E , 11 April 2002 , L-332, UMC and CMU teams (3L); same locality, 12 May 2003 , L-525, Vitheepradit , Prommi , Ferro (1L); Huay Ou Long , opposite Koeng Ka Wia Reforestation Station , rocky stream, 326 m , 14°33.199’N 98°34.238’E , L-1300, R . W. Sites (18L); Huay Pak Kog near Yhong Pha Phum National Park , gravel stream, 206 m , 14°38’N 98°31’E , 9 April 2003 , L- 460, Sites , AV, Prommi , Setaphan (3L); Thong Pha Phum National Park , Huay Pak Kog , gravel stream, 139 m , 14°47.183’N 98°48.401’E , 1 June 2011 , L- 1303, R . W. Sites (16L) . Mae Hong Son Province : Huay Pha, < 1 km N Ban Huay Pha , 19 Apr 2009, 360 m , 19°25.847’N 97°59.827’E , Sites , Vitheepradit , Prommi , L-1049 (1L); Huay Pha , 18 km N Mae Hong Son , 340 m , 19°25’N 97°59’E , 19 March 2002 , CMU team (2L); Huai Pha , 18 km N Mae Hong Son , 340 m , 19°25’N 97°59’E , 19 March 2002 , L-306, Sites, Vitheepradit, Kirawanich (3L); Amphur Khum Yaum, Tumbon Khun Yaum, Huay Ma Surin at Ban Mae Surin , 20 Apr 2009 , 408 m, 18°54.588’N 97°56.695’E , Sites, Vitheepradit, Prommi, L-1050 (11L). Nakon Si Thamarat Province : Nopphitam , Tumbon Krung ChingKlong Pod , stream, 130 m , 08°48’N 99°35’E , L-571, Vitheepradit & Ferro (1L) . Nan Province : Amphur Bo Kluea , Ban Bo Kluea Tai , Nam Mang , 663 m , 19°09’N 101°09’E , 22 Apr 2003 , L-476, Vitheepradit, Prommi, Setaphan (7L); Amphur Bo Kluea, Ban Bo Kluea Tai, Nam Mang, 17 Apr 2009, 663 m , 19°09.141’N 101°09.277’E , L-1044, S ites, Vitheepradit, Prommi (10L). Phayao Province : Heuy Chom Poo Wildlife Sanctuary Station , Heut Chom Poo Falls , gravel, 526 m , 19°10’N 100°06’E , L-468, Vitheepradit , Prommi , Setaphan (2L) . Phrae Province : stream from Cheung Thong Waterfall , gravel, 259 m , 18°03.020’N 100°14.927’E , 14 May 2004 , L- 688, Vitheepradit & Prommi (2L). Suratthani Province : Amphur Ban Na San , Ban Plai , Nam , 168 m , 08°52.680’N 99°28.621’E , 17 June 2004 , L-775, Sites, Vitheepradit, Prommi (2L). Tak Province : Amphur Tha Song Yang, stream, 4 km NW of Amphur Mae Ramat , 21 April 2009, 226 m , 17°03.834’N 98°26.632’E , L-1057, Sites, Vitheepradit, Prommi (1L).