Sadoletus ryukyuensis Ban & Ishikawa, 2013

(Figs. 10–11)

Sadoletus valdezi (non Bergroth, 1918): Hidaka (1959: 200) (record from Japan). Miyamoto and Yasunaga (1989: 175) (catalogue, distribution). Tomokuni (1989: 191) (record). Hayashi (2002: 141) (catalogue, distribution).

Sadoletus ryukyuensis Ban & Ishikawa, 2013: 199 (original description) . Ishikawa (2016: 458) (catalogue, distribution).

Material examined. Non-types: 4 ♂ 2 ♀ (TUA)— THAILAND: 2 ♂, 12°49'14.5“N, 102°07'40.6”E, alt. 66 m, Krathing Country Resort, Chanthaburi Prov., 20.III.2015, Light trap, Teruaki Ban (TUA) ; 1 ♂ 1 ♀, Same locality, 21.III.2015, Teruaki Ban (TUA) ; 1 ♂ 1 ♀, 12°40'13.5“N, 101°24'49.5”E, alt. 452 m, Near Rayong, Rayong Prov., 17.III.2015, Light Trap, Teruaki Ban (TUA).

Diagnosis. Recognized among congeners of Sadoletus by a combination of the following characters: head, anterior lobe of pronotum, and basal half of scutellum black to dark brown (Figs. 10, 11); antennae generally brownish yellow; labium attaining mesocoxae; posterior lobe of pronotum brownish yellow to dark brown, with pale stripe along meson (Figs. 10, 11); hemelytra well surpassing apex of abdomen (Figs. 10, 11); corium black to dark brown in apical third to apical half in male (Fig. 10), entirely pale to brownish yellow in female (Fig. 11); profemur armed with 2 spines; metafemur and metatibia with dark brown annulations; abdominal sterna dark brown; ovipositor straight; the two hemiventrites of the medially completely bisected sternite VII are short therefore posterior margins of sternites III–V straight, posterior margin of sternite VI weakly concave (as in Ban & Ishikawa, 2013: 198, fig. 6); paramere spatula-shaped at apex (as in Ban & Ishikawa, 2013: 200, fig. 17).

Distribution. Japan (Ryukyus), Thailand (Chanthaburi Prov., Rayong Prov.), New to Thailand.

Biological notes. The specimens were collected from artificial light located in adjacent mountainous forest and open forest adjacent to a resort hotel.