Microserangium okinawense Miyatake 1961

TL: 1.35–1.42mm, TW: 1.15–1.25mm, TH: 0.76–0.79mm, TL/TW: 1.13–1.17; PL/PW: 0.40–0.42; EL/EW: 0.95–1.00; HW/TW: 0.42; PW/TW: 0.68. Body shiny and glabrous (Fig. 19). Dorsum uniformly dark brown to black. Head reddish brown. Underside reddish brown, legs yellowish brown, tibiae and tarsi yellow. Head transverse and ventrally flattened; frontal punctures fine and inconspicuous, with long sparsely distributed setae; eyes round, large and coarsely faceted, widest interocular distance 0.44× width of head. Antennal club oval and flat, apex blunt (Fig. 83). Pronotum short and strongly transverse, anterior corners inconspicuous and blunt, mat and shagreened. Pronotal disk with densely distributed large and fine shallow punctures both associated with long sparsely distributed setae. Elytra smooth and shiny, with sparse row of long setae along margins, punctures extremely fine and inconspicuous. Prosternum mat and impunctate. Mesoventrite transverse, very short, surface mat weakly furrowed. Metaventrite shiny and glabrous, punctures in center fine and conspicuous, 1.0–2.0 diameters apart. Meso- and metatibiae protuberant externally beyond middle, almost triangular; tarsus with 3 tarsomeres (Fig. 84). Male genitalia. Penis strongly curved along entire length, apex narrowed and pointed, penis capsule conspicuous (Figs 78–79). Tegmen rather slender and strongly asymmetrical. Penis guide in lateral view slender, straight, widest in apical 1/3, narrowed at base, apex pointed (Fig. 80); in ventral view flat and shovel-shaped, apex slightly blunt (Fig. 81). Parameres conspicuous, small (Fig. 80).

China (Hainan, Taiwan).