Jaechanax Lee, Satô, and Yang, 2000

Shepard, William D. & Sites, Robert W., 2019, Larval Psephenidae (Coleoptera: Byrrhoidea) of Thailand: Annotated List and Illustrated Key to Genera, The Coleopterists Bulletin 73 (2), pp. 259-282 : 262-263

Jaechanax Lee, Satô, and Yang, 2000 Figs. 3 , 26 , Map A

Discussion. Jaechanax is a relatively small genus, with six species distributed from Thailand east to Laos and south through Malaysia, Indonesia, and the Philippine Islands. In Thailand, Jaechanax major (Pic, 1913) is reported from Bana, Yala Province: Betong, and Satun Province: Thale Ban ( Lee et al. 2000b; Lee 2016).

Material Examined. Kalasin Province: Phu Pan N. P., 4 June 1998, Huay Pla Duk, stream w/ boulders & veg., L-148, Sites, Simpson, Vitheepradit (1L) . Kanchanaburi Province: Thong Pha Phum Reforestation Station, Nam Tok Pong Kra Dang Nga , 203 m, 14°31’N 98°37’E, 12 April 2002, L-334, UMC and CMU teams (1L) . Lampang Province: 7 km SW Sop Prop , 23 III 1994, Mae Nam Wang (WDS-A-1041 on reverse), William D. Shepard, leg. (3L) . Loei Province: 2 km W Phu Kradung , 4 IV 1994, Lam Phong Ko (WDS-A-1052 on reverse), William D. Shepard, leg. (3L) . Nakon Ratchasima Province: Khao Yai National Park, Heaw Narok Waterfall , 400 m, 14°17’N 101°23’E, 5 April 2004, L-601, Sites & Vitheepradit (1L) . Phitsanulok Province: Phu Hin Rongkla National Park, Nam Tok Romglao , rock face, 1190 m, 16°59’N 101°00’E, 6 May 2003, L-507, Vitheepradit, Prommi, Ferro (1L) . Phrae Province: Wieng Ko Sai N. P., Nam Tok Mae Koeng Luang , 350 m, 17°58’N 99°35’E, 14 III 2002, L-295, Sites, Vitheepradit, Kirawanich (1L) . Ratchaburi Province: Amphur Pak Tho, TumbonYang Hak , creek w/ no name, 200 m, 13°19’N 99°33’E, 18 April 2002, L-353, Vitheepradit, Kirawanich (1L) . Sakhon Nakhon Province: 11 km NE Kham Poem , 5 III 1994, Huai Ya (WDS-A-1027 on reverse), William D. Shepard, leg. (5L) . Songkhla Province: Amphur Hat Yai, stream from Ton Nga Chang Waterfall at Buddhist temple, 78 m, 06°56’N

100°15’E, 3 May2002, L-388 AV, Kirawanich, Suwonno (1L).

Figures

Figs. 1–3. Larvae of Eubrianacinae. 1) Genus morphologically similar to Eubrianax; 2) Jinbrianax; 3) Jaechanax. app = abdominal posterior plates; cl = costal lines; cp = cephalic plate; cpl = closed periocellar line; gap = gap between abdominal paratergites 6 and 7; ipl = incomplete periocellar line; para = paratergites. All figures from Lee et al. (2007).

Figs. 25–30. Eubrianacinae genera, dorsal habitus. 25) Eubrianax; 26) Jaechanax; 27) Jinbrianx; 28) Mubrianax;