Cryptonychini, Chapuis, 1875

Borowiec, Lech, Świętojańska, Jolanta & Sekerka, Lukáš, 2019, Revision of the tribe Cryptonychini (Coleoptera: Chrysomelidae: Cassidinae) of New Caledonia, Zootaxa 4690 (1), pp. 1-71 : 5

Key to New Caledonian genera of Cryptonychini

1. Anterior margin of prosternum forming distinct collar projecting towards mouthparts and separated by sulcus from prosternum, its anterior part emarginate (Figs 129, 188, 196, 205, 212)..................................................... 2

- Anterior margion of prosternum even, regularly convex ( Figs 3 , 12 , 19, 27, 36, 53, 73, 85, 95, 103, 110, 120, 137, 146, 156, 166, 174, 184)........................................................................................ 4

2. Pronotum with laterally projecting tubercles approx. at ⅓ length (Figs 131, 191, 199); prosternal collar separated by deep sulcus (Figs 129, 188, 196).................................................................................... 3

- Pronotum conical without projecting anterior corners (Figs 207, 214); prosternal collar separated by shallow sulcus (Figs 205, 212); interocular plate nearly continuous with vertex with faint sulcus (Figs 206, 213); elytra usually with more or less visible short scutellar row of 1–3 punctures........................................................ Wanatispa gen. nov.

3. Pronotum on each side with conical tubercle at ⅓ length ( Figs 191 , 199); interorcular plate strongly convex, separated from vertex by deep sulcus ( Figs 189, 190 , 197, 198); interantennal process decreasing thus not on the same plane as interocular plate, without medial sulcus; frontoclypeus triangular with pointed apex ( Figs 188 , 196); elytra with or without scutellar row of punctures......................................................................... Torquispa Uhmann, 1954

- Pronotum on each side with broadly rounded projection at anterior corners (Fig. 131); interocular plate flat, lower than vertex and separated from it by shallow sulcus (Fig. 130); interantennal process on the same plane as interocular plate and with a medial sulcus (Fig. 130); frontoclypeus rectangular with truncate apex; eyes large, gena obsolete (Fig. 129); elytra without scutellar row of punctures............................................................. Paratorquispa gen. nov.

4. Punctation of elytra largely irregular, with aditional rows apically thus elytra at base with eight and apically with ten rows of punctures (Figs 25, 34, 43, 51, 61, 70, 71, 82, 83, 135, 143, 144); scutellar row of punctures always present; dorsum usually dull with velvet like surface, only costae shiny............................................................... 5

- Punctation of elytra largely regular, two sutural rows and two marginal rows completely regular, thus elytra at base as well as apically with eigth rows of punctures ( Figs 1 , 9, 10 , 16, 17, 93, 101, 108, 117, 118, 151–154, 163, 164, 172, 182); scutellar row present or absent; dorsum shiny.......................................................................... 6

5. Elytra with three complete costae (Figs 25, 34, 43, 51, 61, 70, 71, 82, 83); large species, length 9.5–14.8 mm ............................................................................................ Caledonispa Uhmann, 1952

- Elytra with two complete costae, middle costa rudimental, present only basally (Figs 135, 143, 144); small species, length 4.9–8.5 mm ...................................................................... Stephanispa Gressitt, 1960

6. Elytra with six regular rows of punctures in basal 2/5, then each of rows 5 and 6 multiply to four completely regular rows running to apex of elytra ( Figs 1 , 9, 10, 14 , 17 , 93 , 101 , 108 , 117, 118); interocular plate convex and separated from vertex by deep sulcus ( Figs 4 , 14 , 21, 96, 104, 111, 121); elytra always with distinct scutellar row of punctures........................ 7

- Elytral rows 5 and 6 irregular for most of length, sometimes merged centrally and multiplied to more or less regular rows on apical third of elytra (Figs 153, 154, 163, 164, 172, 182); interocular plate moderately convex but nearly continous with vertex only laterally separated by shallow sulcus (Figs 157, 167, 175, 183); elytra with or without short scutellar row of punctures.................................................................................. Teretrispa Gressitt, 1960

7. Pronotum conical, widest at base and then narrowing anterad, near anterior corners slighly expanded but not projecting ( Figs 97 , 105 , 112 , 122); interocular plate transverse (wider than long), interantennal process very short, extending to ¼ basal length of antennomere I ( Figs 96 , 104 , 111 , 121); clypeus with medial carina ( Figs 95 , 102 , 110 , 120).... Isopedhispa Spaeth, 1936

- Pronotum rectangular, widest at anterior corners, subparallel-sided from base and stronly widening at anterior projecting corners ( Figs 5 , 13 , 20); interocular plate longer than wide; interantennal process normal, extending at least to ½ of length of antennomere I ( Figs 4 , 14 , 21); clypeus without medial carina ( Figs 3 , 12 , 19)..................... Brontispa Sharp, 1904

Figures

FIGURES 1–8. Brontispa caledonica sp. nov,. 1. Body of female dorsal, 2. Antenna, 3. Frontoclypeus and prosternum, 4. Head dorsal, 5. Pronotum, 6. Fore leg of female, 7. Mid leg of female, 8. Hind leg of female.

FIGURES 9–15. Brontispa longissima (Gestro, 1885). 9–10. Body dorsal, 11. Antenna, 12. Frontoclypeus and prosternum, 13. Pronotum, 14. Head dorsal, 15. Fore leg.

FIGURES 186–193. Torquispa covexifrons sp. nov. 186. Body dorsal, 187. Antenna, 188. Frontoclypeus and prosternum, 189. Male head dorsal, 190. Female head dorsal, 191. Pronotum, 192. Fore leg, 193. Mid leg.

FIGURES 172–181. Torquispa longicollis sp. nov. 172. Body dorsal, 173. Antenna, 174. Frontoclypeus and prosternum, 175. Head of male dorsal, 176. Head of female dorsal, 177. Pronotum, 178. Fore leg of male, 179. Fore leg of female, 180. Mid leg of male, 181. Mid leg of female.

FIGURES 93–100. Isopedhispa cocotis (Maulik, 1933). 93. Body dorsal, 94. Antenna, 95. Frontoclypeus and prosternum, 96. Head dorsal, 97. Pronotum, 98. Mid leg, 99. Fore leg, 100. Holotype labels.

FIGURES 101–107. Isopedhispa costata sp. nov. 101. Body dorsal, 102. Antenna, 103. Frontoclypeus and prosternum, 104. Head dorsal, 105. Pronotum, 106. Fore leg of female, 107. Mid leg of female.

FIGURES 108–116. Isopedhispa ferruginea Spaeth, 1936. 108. Body dorsal, 109. Antenna, 110. Frontoclypeus and prosternum, 111. Head dorsal, 112. Pronotum, 113. Fore leg of male, 114. Fore leg of female, 115. Mid leg of female, 116. Mid leg of male.