Hyboserica, Peringuey, 1904

KEY TO SPECIES OF THE HYBOSERICA View in CoL COMPLEX (♂♂)

1 Epipleural carina reduced after anterior third of elytra. Base of pronotum with fine marginal line.................................................................. 2 ( Leoserica View in CoL gen. nov.)

1’ Epipleural carina complete. Base of pronotum without marginal line............... 5 ( Hyboserica View in CoL )

2 Protibia bidentate. Metacoxae densely setose. Mesotarsomere 1 very long, more than 1.5 times longer than the subsequent tarsomere............................................ Leoserica jamesi View in CoL

2’ Protibia tridentate. Metacoxae glabrous. Mesotarsomere 1 not much longer than the subsequent tarsomere............................................................................3

3 Hind wings reduced ( Fig. 7C). Marginal line of anterior margin of pronotum narrowly interrupted medially.............................................................. Leoserica capensis View in CoL

3’ Hind wings complete ( Fig. 8I). Marginal line of anterior margin of pronotum complete............ 4

4 Parameres basally convexly widened (lateral view; Fig. 7A)................... Leoserica knysnana View in CoL

4’ Parameres nearly flat (lateral view), basally not widened ( Fig. 7B)............... Leoserica hotovyi View in CoL

5 Aedeagus, including parameres, strongly asymmetrical ( Fig. 6F)............. Hyboserica muellerae View in CoL

5’ Aedeagus symmetric or only slightly asymmetrical (e.g. Fig. 6C–E)............................ 6

6 Meso- and metatarsomeres punctate..................................................... 7

6’ Meso- and metatarsomeres not punctate................................................. 15

7 Antennal club longer than the remaining antennomeres combined............................ 8

7’ Antennal club not longer than the remaining antennomeres combined......................... 9

8 Parameres slightly asymmetrical (e.g. Fig. 4H). Anterior margin of labroclypeus weakly sinuate... 10

8’ Parameres symmetrical (e.g. Fig. 5A). Anterior margin of labroclypeus straight................. 11

9 Antennal club shorter than the remaining antennomeres combined.......................... 13

9’ Antennal club as long as the remaining antennomeres combined............................. 14

10 Parameres slender. Distal teeth of parameres small ( Fig. 5B)............... Hyboserica uitsoekensis View in CoL

10’ Parameres more robust. Distal teeth of parameres large ( Fig. 4H).......... Hyboserica asymmetrica View in CoL

11 Distal dorsomedian lamella of phallobase incised medially at apex. Basal lobe of parameres displaced beyond the middle. Sclerotization of median lamella of phallobase continuous and in one plain with the rest of phallobase ( Fig. 5A.............................................. Hyboserica madiba View in CoL

11’ Sclerotization of median lamella of phallobase not continuous to the rest of phallobase, widely membranous between lamella and principal phallobase and concavely excavated mesopreapically (e.g. Fig. 4F)............................................................................ 12

12 Distal dorsomedian lamina of phallobase wide and semi-circular and weakly curved (lateral view) ( Fig. 4F)........................................................ Hyboserica soutpansbergensis View in CoL

12’ Distal dorsomedian lamina of phallobase narrower and ligula-like, and strongly curved (lateral view) ( Fig. 4G)........................................................ Hyboserica entabeniensis View in CoL

13 Parameres in lateral view oval ( Fig. 6B)................................. Hyboserica shulmani View in CoL

13’ Parameres in lateral view elongate ( Fig. 5C)........................ Hyboserica shilouvaneensis View in CoL

14 Distal dorsomedian lamina of phallobase wide and semi-circular. Distal teeth of parameres narrow, sharply pointed and directed distally. Basal lobes of parameres of moderate size and sharply pointed ( Fig. 4E)........................................................ Hyboserica nelspruitensis View in CoL

14’ Distal dorsomedian lamina of phallobase narrow, longitudinally concave and ligula-like. Distal teeth of parameres very small, nearly invisible. Basal lobes of parameres very small ( Fig. 5G)................................................................ Hyboserica schoenhoferi View in CoL

15 Shape of parameres (in lateral view) transverse ( Fig. 6E)...................... Hyboserica uhligi View in CoL

15’ Parameres (in lateral view) at least as long as wide (e.g. Fig. 6C)............................. 16

16 Shape of parameres (in lateral view) spherical ( Fig. 6C)...................... Hyboserica haladai View in CoL

16’ Shape of parameres (in lateral view) elongate (e.g. Fig. 6D)................................. 17

17 Antennal club longer than the remaining antennomeres combined............... Hyboserica kochi View in CoL

17’ Antennal club not longer than the remaining antennomeres combined.........................18

18 Antennal club as long as the remaining antennomeres combined..............................19