The genus Beloesthes Thomson, 1864 and B. megabasoides Thomson, 1864 are redescribed and figured. Alcathousites asperipennis (Fairmaire & Germain, 1859) comb. nov (from Leiopus) = Alcathousites chaclacayoi Gilmour, 1962 syn. nov.
Acanthocinini; Alcathousites; Beloesthes; Cerambycidae; taxonomy