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

publication ID	https://doi.org/ 10.11646/zootaxa.4690.1.1
publication LSID	lsid:zoobank.org:pub:18200D80-191F-4FEE-9B90-EAB43BEA218B
persistent identifier	https://treatment.plazi.org/id/03A1D663-8760-E469-FF7D-FDF402A97F15
treatment provided by	Plazi
scientific name	Cryptonychini
status

Treatment

Key to New Caledonian genera of Cryptonychini View in CoL

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 View FIGURES 1–8 , 12 View FIGURES 9–15 , 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 View FIGURES 186–193 , 199); interorcular plate strongly convex, separated from vertex by deep sulcus ( Figs 189, 190 View FIGURES 186–193 , 197, 198); interantennal process decreasing thus not on the same plane as interocular plate, without medial sulcus; frontoclypeus triangular with pointed apex ( Figs 188 View FIGURES 186–193 , 196); elytra with or without scutellar row of punctures......................................................................... Torquispa Uhmann, 1954 View in CoL

- 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 View FIGURES 1–8 , 9, 10 View FIGURES 9–15 , 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 View in CoL

- 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 View in CoL

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 View FIGURES 1–8 , 9, 10, 14 View FIGURES 9–15 , 17 View FIGURES 172–181 , 93 View FIGURES 93–100 , 101 View FIGURES 101–107 , 108 View FIGURES 108–116 , 117, 118); interocular plate convex and separated from vertex by deep sulcus ( Figs 4 View FIGURES 1–8 , 14 View FIGURES 9–15 , 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 View in CoL

7. Pronotum conical, widest at base and then narrowing anterad, near anterior corners slighly expanded but not projecting ( Figs 97 View FIGURES 93–100 , 105 View FIGURES 101–107 , 112 View FIGURES 108–116 , 122); interocular plate transverse (wider than long), interantennal process very short, extending to ¼ basal length of antennomere I ( Figs 96 View FIGURES 93–100 , 104 View FIGURES 101–107 , 111 View FIGURES 108–116 , 121); clypeus with medial carina ( Figs 95 View FIGURES 93–100 , 102 View FIGURES 101–107 , 110 View FIGURES 108–116 , 120).... Isopedhispa Spaeth, 1936 View in CoL

- Pronotum rectangular, widest at anterior corners, subparallel-sided from base and stronly widening at anterior projecting corners ( Figs 5 View FIGURES 1–8 , 13 View FIGURES 9–15 , 20); interocular plate longer than wide; interantennal process normal, extending at least to ½ of length of antennomere I ( Figs 4 View FIGURES 1–8 , 14 View FIGURES 9–15 , 21); clypeus without medial carina ( Figs 3 View FIGURES 1–8 , 12 View FIGURES 9–15 , 19)..................... Brontispa Sharp, 1904 View in CoL