Sthenaridea Reuter, 1885 (2 spp.)

S. piceonigra (Motschulsky, 1863) — Japan (Bonin and Ryukyu Islands); known widely from the Oriental and Australian regions, including SE China and Taiwan.—Graminoid monocots (mostly sedges at water margin) (Yasunaga, 2001; Yasunaga & Duwal, 2015; 2016).

S. rufescens (Poppius, 1915) — Japan (Bonin and Ryukyu Islands); known from the Oriental and Australian regions—Graminoid monocots ( Cyperaceae, Gramineae) (Yasunaga, 2001; Yasunaga & Duwal, 2015; 2016).