Isopedhispa, Spaeth, 1936

Borowiec, Lech, Świętojańska, Jolanta & Sekerka, Lukáš, 2019, Revision of the tribe Cryptonychini (Coleoptera: Chrysomelidae: Cassidinae) of New Caledonia, Zootaxa 4690 (1), pp. 1-71 : 29

Key to species of Isopedhispa

1. Dorsum mostly brown to black ( Figs 93 , 101 , 117, 118), distinctly convex; pronotum with numerous coarse and foveolate punctures ( Figs 97 , 105 , 122)............................................................................2.

- Dorsum entirely ferrugineous ( Fig. 108 ), strongly depressed; pronotum almost as long as broad, finely and shallowly punctate on anterior third ( Fig. 112 ).......................................................... I. ferruginea Spaeth, 1936

2. Pronotum rather densely punctate, only narrow medial line impunctate, punctures densely arranged with interspaces mostly narrower than puncture diameter ( Figs 105 , 122); elytral margin broadly explanate; punctation of elytra moderately coarse, dense and shallow ( Figs 101 , 117, 118)....................................................................3.

- Punctation of pronotum forming groups on sides of disc, posterior half of disc largely impunctate, punctures sparsely disposed, interspaces mostly larger than puncture diameter ( Fig. 97 ); lateral margins of elytra very narrow; punctation of elytra very coarse and sparse, punctures with deep fovea ( Fig. 93 )..................................... I. cocotis ( Maulik, 1933)

3. Larger species, length 11.45–12.95 mm; pronotum very distinctly macro- and micro-punctate, punctation very dense thus disc without continuous impunctate medial line ( Fig. 105 ); explanate margins of elytra completely black; elytral interval 5 costate on whole length, interval 7 costate behind the middle, interval 9 costate in anterior half ( Fig. 101 )........ I. costata sp. nov.

- Smaller species, length 6.60–9.50 mm; pronotum densely punctate but with conspicuous impunctate medial line, micropunctation very fine and sparse (Fig. 122); explanate margins of elytra mostly or completely ferrugineous; elytral intervals not costate, only interval 7 elevated behind the middle and interval 9 more or less elevated in anterior half (Figs 117, 118)............................................................................................ I. latemarginata sp. nov.

Figures

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.