Microserangium hainanensis Miyatake 1961

TL: 1.52–1.62mm, TW: 1.35–1.45mm, TH: 0.86–0.89mm, TL/TW: 1.11–1.12; PL/PW: 0.44–0.45; EL/EW: 0.90–0.91; HW/TW: 0.43; PW/TW: 0.70. Body shiny and glabrous (Fig. 17). Dorsum uniformly black. Head dark brown, frons brown. Underside dark brown, legs reddish brown, tibiae and tarsi yellow. Head transverse and ventrally flattened; frontal punctures fine and sparsely distributed, 1.0–2.0 diameters apart, associated with long sparsely distriuted setae, eyes round, large and coarsely faceted, widest interocular distance 0.47× width of head. Antennal club oval and flat, apex blunt (Fig. 67). Pronotum strongly transverse, anterior corners inconspicuous and blunt, mat and shagreened. Pronotal disk with densely distributed large punctures associated with long sparsely distributed setae. Elytra smooth and shiny, with long sparsely distributed setae along margins, punctures extremely fine and inconspicuous. Prosternum mat and impunctate. Mesoventrite transverse, very short, surface mat weakly furrowed. Metaventrite shiny and glabrous, with densely distributed medium size punctures at center, 1.0–2.0 diameters apart. Meso- and metatibiae angulate externally beyond middle; tarsus with 3 tarsomeres (Fig. 68). Male genitalia. Penis strongly curved, apex narrowed and pointed, penis capsule with conspicuous outer arm (Figs 62–63). Tegmen slender and strongly asymmetrical. Penis guide in lateral view slender, straight, apex pointed (Fig. 64), in ventral view acute triangular, apex pointed (Fig. 65). Parameres conspicuous, small, short, rectangular with penis guide (Fig. 64).

China (Hainan).