Miridiba undetermined

Gao, Chuan-Bu, Li, Yan & Fang, Hong, 2019, Miridiba (Pledina) Lamellata Gao and Fang (Coleoptera: Scarabaeidae), a New Species from Guizhou, China, and a Key to the Chinese Species in the Genus, The Coleopterists Bulletin 73 (2), pp. 458-464 : 461-463

CHECKLIST OF MIRIDIBA SPECIES KNOWN FROM CHINA

Miridiba (Miridiba) aequabilis ( Bates, 1891) Miridiba (Miridiba) bannaensis Gao and Fang, 2018

Miridiba (Miridiba) castanea (Waterhouse, 1875) Miridiba (Miridiba) formosana (Moser, 1909) Miridiba (Miridiba) huesiotoi Li and Yang, 2015 Miridiba (Miridiba) kuatunensis Gao and Fang, 2018

Miridiba (Miridiba) kuraruana Nomura, 1977 Miridiba (Miridiba) obscura Itoh, 1995

Miridiba (Miridiba) pilosella (Moser, 1908) Miridiba (Miridiba) sus (Moser, 1912)

Miridiba (Miridiba) taipei Wang and Li, 2015

462 Miridiba (Miridiba) taoi Li and Wang, 2015 with a thick protuberance on dorsum ........ Miridiba (Miridiba) trichophora ( Fairmaire, 1891) ..... Miridiba xingkei Gao and Fang, 2018 Miridiba (Miridiba) tuberculipennis (Moser, 1913) 5. Dorsomedial margin of metatibia with 3 small, Miridiba (Miridiba) wangi (Zhang, 1997) blunt spines; ventral branches of parameres Miridiba (Miridiba) xingkei Gao and Fang, 2018 with tips bent 90° outwards ................... 6 Miridiba (Miridiba) youweii Gao and Fang, 2018 5 ʹ. Dorsomedial margin of metatibia with 2 or 3 Miridiba (Pledina) lamellata Gao and Fang , large, sharp spines; ventral branches of parnew species ameres with tips curved outwards or bent Miridiba (Pledina) sinensis (Hope, 1845) downward ......................................... 8

6. Dorsal branches of parameres bent 100°

downwards at basal 1/3 ..........................

.... Miridiba youweii Gao and Fang, 2018 KEY TO THE SPECIES OF MIRIDIBA KNOWN TO 6 ʹ. Dorsal branches of parameres curved

OCCUR IN CHINA downward ......................................... 7 Note. Miridiba aequabilis was not examined, and 7. Anterior margin of clypeus moderately bilothe diagnostic characters provided in the original bate; ventral branches of parameres thin ..... description by Bates (1891) are inadequate for use in.... Miridiba tuberculipennis (Moser, 1913) the key. 7 ʹ. Anterior margin of clypeus arcuate; ventral

branches of parameres distinctly thick ....... 1. Antenna with 9 antennomeres ............... 2 .................. Miridiba obscura Itoh, 1995 1 ʹ. Antenna with 10 antennomeres ............ 17 8. Head, pronotum, and elytra chestnut colored; 2. Dorsal surface of frons and elytra glabrous; pygidium with dense, short setae; ventral

lateral margin of pronotum smooth .......... 3 branch of parameres with a large, cone- 2 ʹ. Dorsal surface of frons and elytra setiferous shaped hook before apex ........................

or pubescent; lateral margin of pronotum ............................. Miridiba bannaensis

crenulate ........................................... 9 Gao and Fang, 2018 3. Middle line of dorsal pronotum with a lon- 8 ʹ. Head and pronotum dark reddish brown,

gitudinal series of long, erect setae ........... elytra brown; pygidium with long setae

.................... Miridiba sus (Moser, 1912) apically; dorsal branches of parameres 3 ʹ. Dorsal surface of pronotum glabrous .......... 4 curved inwards and downwards; ventral 4. Epipleura with several yellowish setae at branches with tips curved outward and up-

base; dorsal branch of parameres without ward ......................... Miridiba castanea

protuberance on dorsum ....................... 5 (Waterhouse, 1875) 4 ʹ. Epipleura with dense, long yellowish setae 9. Dorsal surface of pronotum densely covered

from base to apex; dorsal branch of parameres with long, hair-like setae .................... 10

9 ʹ. Dorsal surface of pronotum covered with short setae ....................................... 11

10. Anterior margin of clypeus bilobed; ventral branches of parameres with tips curved outwards ............................................. ... Miridiba trichophora ( Fairmaire, 1891)

10 ʹ. Anterior margin of clypeus distinctly arcuate; ventral branches of parameres with tips curved outwards and downwards ............. .......... Miridiba taipei Li and Yang, 2015

11. Scutellum glabrous; anterior margin of clypeus bilobed; elytra with short setae near basal elytra and costal margins ................ ......... Miridiba kuraruana Nomura, 1977

11 ʹ. Scutellum setiferous; anterior margin of clypeus arcuate ................................. 12

12. Angle between phallobase and parameres 90°; parameres with ventral branches elongate .................................................... ..... Miridiba wangi (Zhang and Li, 1997)

12 ʹ. Angle between phallobase and parameres no less than 120°; ventral branches of parameres extended forward and curved inwards ...................................... 13

13. Parameres with ventral branches curved outwards and downwards at the end; dorsal branches with tips expanded moderately .... ............................ Miridiba kuatunensis Gao and Fang, 2018

13 ʹ. Parameres with ventral branches curved outwards or upwards ......................... 14

14. Dorsobasal 1/4 of parameres bent downwards ............................................. 15

14 ʹ. Dorsobasal 1/3 of parameres bent downwards ............................................. 16

15. Ventral branches of parameres with tips curved outwards and upward; body length greater than 20 mm ............................... .......... Miridiba formosana (Moser, 1909)

15 ʹ. Ventral branches of parameres with tips moderately curved outwards and downward; body length less than 20 mm .................. ............. Miridiba pilosella (Moser, 1908)

16. Disc of pronotum and elytra with setae subequal to diameter of puncture; ventral branches of parameres with tips moderately curved outwards and upwards ................. ..... Miridiba huesiotoi Li and Yang, 2015

16 ʹ. Disc of pronotum and elytra with setae distinctly longer than diameter of puncture; ventral branches of parameres with tips moderately curved outwards .................... ............ Miridiba taoi Li and Yang, 2015

17. Pygidium with long setae apically; parameres with 4 lamellar branches, dorsal branches longer and wider than ventral branches..... ......... Miridiba lamellata Gao and Fang , new species

17 ʹ. Pygidium without long setae apically; parameres dorsally with a transparent membrane at base ....... Miridiba sinensis ( Hope, 1842)