A review of the genus Miridiba Reitter (Coleoptera: Scarabaeidae: Melolonthinae) of Taiwan Author Li, Chun-Lin Author Yang, Ping-Shih Author Wang, Chuan-Chan text Zootaxa 2015 3955 4 521 536 journal article 10.11646/zootaxa.3955.4.4 6bfc02a5-f0b4-463f-a73b-2acd495dc130 1175-5326 245379 ED02F77E-42CA-41EC-89F3-AF5B8F36178F 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 )