Coptorrhynchus wolterecki Günther, 1938: 39–40. Type locality: Sangihe besar.

Description. Lectotype (Fig. 36a). Length. Pronotum plus elytron 6.20 mm. Legs ferruginous. Rostrum ca. as long as wide (1.00 X). Pronotum 0.92 X as long as wide. Elytra 1.40 X as long as wide; with rows of inconspicuous subrecumbent scales; intervals with smaller or larger patches of white, densely overlapping scales. Abdomen. Male ventrites 1–2 at middle weakly concave, subglabrous, sublaterally densely squamose; ventrites 3–5 subglabrous, ventrites 4–5 with transverse row of erect setae. Genitalia. Penis (Fig. 36b).Apodeme 1.8 X as long as body of penis. Intraspecific variation. Length. Pronotum plus elytron 6.64–8.16 mm. Female ventrites 3–5 retracted, hardly visible in ventral aspect; female ventrite 3 forming sharp ridge, ventrite 4 forming tongue-shaped process overlapping ventrite 5.

Material examined. Type specimens. Male, lectotype by present designation: INDONESIA, Sangihe: Taroena, Woltereck, “35” 1939; labels (Fig. 36c); condition: fair; formerly pinned through right elytron; genitalia in glycerol in microtube; DNA extraction ARC7288 (GenBank # OR557457) (SMTD). Paralectotypes: 12 exx, same data as lectotype (SMTD); 3 exx, Sangihe, Siaoe, Kapete (SMTD).

Notes. Günther (1938) based the original description on 21 specimens from different localities of Sangihe Island; he did not designate a holotype. Sixteen specimens fitting his description were found at SMTD. A lectotype is designated to ensure stability of nomenclature.