Hexamitodera semivelutina Heller, 1896 Fig. 1E, F

Redescription.

Male. Body 3.7-3.8 times as long as wide. Vertex and temples straight, distance between temples narrower than anterior margin of pronotum and widest pronotal width. Head dorsally uniformly finely punctured, with a fine longitudinal furrow reaching the base. Mandible without inner basal tooth, feebly curved or angulate (Fig. 3A). Mandible as long as one-half of the rest of the head, as long and wide as scape. Gena rounded apically; width between genae distinctly narrower than width between temples, the latter narrower than pronotal width. Antenna sparsely pubescent. Antennomeres 1-2 apically rounded, 3 straight, as 1.9 times as long as scape, 4-11 obtusely toothed. Antenna and legs unicolorous.

Prothorax 1.21 times as wide as long. Procoxal cavity opened posteriorly by a comparable small gap. Apex of mesosternal process not concealed by metasternum.

Elytra 2.9 times as long as prothorax and head excluding mandible and 2.8 times as long as elytra width, brownish.

Female. Head, mandible and pronotum as in male. Elytron 3.3 times as long as prothorax and head excluding mandible, metallic blue with purple brownish stripes and brown apices.

Geographical distribution.

Sulawesi.