Key to Miridiba species of Taiwan

1. Dorsum of body more or less setose; range of body length 14.1–21.3 mm; antennae with 9 antennomeres; parameres symmetrical, divided into upper and lower parts, inner margins with fringe of robust, long setae.............................. 2

-. Dorsum of body glabrous (Figs. 6, 12, 18); body length 19.5–22.8 mm; antennae with 10 antennomeres parameres asymmetrical, not divided into upper and lower parts, glabrous (Fig. 39).................. Miridiba (Pledina) sinensis (Hope, 1842)

2. Overall dorsal surface (with exception of clypeus and scutellum glabrous) densely covered with hair-like, long setae; parameres smoothly curved downwardly (Fig. 33)................... Miridiba (Miridiba) taipei Wang & Li, new species

-. Overall dorsal surface covered with tiny to moderately long setae, smallest setae shorter than diameter of puncture; parameres obtusely curved at apically (Figs. 25, 27, 29, 31)............................................................. 3

3. Most setae on pronotum and elytra shorter than diameter of puncture with exception of a few long setae on base of elytra, sutural costa and in front of scutellum (Fig. 13).......................... Miridiba (Miridiba) kuraruana Nomura, 1977

-. Setae on pronotum and elytra subequal to or distinctly longer than diameter of puncture..............................4

4. Disc of pronotum and elytra with setal length subequal to diameter of puncture; metafemora elongate, slightly broadened at middle (Fig. 20)............................................ Miridiba (Miridiba) huesiotoi Li & Yang, new species

-. Disc of pronotum and elytra with setal length distinctly longer than diameter of puncture; metafemora more or less broadened anteriorly and posteriorly (Figs. 21, 22).................................................................... 5

5. Body length less than 17 mm; apex of clypeus moderately bilobed (Fig. 9); base of elytra with only a few of long setae; metafemora less broadened anteriorly and posteriorly (Figs. 21); parameres with upper part gradually curved downwardly (Fig. 29)..................................................... Miridiba (Miridiba) taoi Li & Wang, new species

-. Body length greater than 17 mm; apex of clypeus weakly bilobed (Fig. 10); base of elytra with a row of long, hair-like setae; metafemora distinctly broadened anteriorly and posteriorly (Figs. 22); parameres with upper part strongly curved apically (Fig. 31)............................................................. Miridiba (Miridiba) formosana (Moser, 1909)