Lasinus okinawanus Bekchiev, Hlaváč & Nomura 2013

Body unicoloured, light reddish-brown, maxillary palpi yellow, length 3.0–3.2 mm. Head elongate, about 1.03 longer than wide, and as long as pronotum; median sulcus visible on rostrum, on vertex reaching level of vertexal foveae. Genae with weak protuberance, covered with erected, dense golden setae. Antennae long about 1.94 mm (Fig. 19); scapes 1.16 times longer than wide, 1.40 times as long as pedicels; pedicels as long as wide and as long as antennomeres III; antennomeres IV 1.25 times shorter than III; antennomeres V 1.20 times longer than wide; antennomeres VI 1.60 times longer than wide; antennomeres VII as long as wide; antennomeres VIII about 1.40 times longer and distinctly wider than VII; antennomeres IX as long as wide and about same length as terminal antennomeres, in male with large, shallow, in apical half highly inclined discoidal plate, in female unmodified; antennomeres X quadrate; terminal antennomeres 1.60 times as long as X and about 1.37 times longer than wide. Pronotum about as wide as long, wrinkly, with weak lateral swellings before lateral foveae; lateral and median setose foveae well-defined; median longitudinal sulcus present. Legs long and slender; protrochanters with large apical spine; profemora with longer spine in middle of its length; mesotrochanters at apex with one (male) or three (female) spines; mesofemora with minuscule spine at basal third. Abdomen slightly wider than elytra, first visible abdominal tergite (IV) finely punctate with sparse, short golden setae; carinae short, distance between them 0.39 of maximal tergal width. Aedeagus (Fig. 29) 0.60 mm long; median lobe weakly narrowed apically, with long and narrow apical lobe; endophallus with two spines and two lamellas; ventral spine very large, short, curved downwards in middle, acute rightward at apex; dorsal spine very strong, acute at apex; dorsal lamella small finely dentate on apical part; ventral lamella large; parameres long and slender, different in length, left one overlapping apical lobe, right one shorter,.

Japan (Okinawajima Island).