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 : 28

Genus Isopedhispa Spaeth, 1936

Isopedhispa Spaeth, 1936: 291 (original description); Uhmann 1940: 123 (noted), 1952: 73 (noted), 1958: 206 (catalogue), 1964: 351 (catalogue); Gressitt 1957: 264 (key to species), 1960a: 66 (noted), 1960b: 111 (key to species), 1961: 79 (noted); Würmli 1975: 35 (diagnostic redescription); Seeno & Wilcox 1982: 163 (catalogue); Jolivet 1989: 310 (host plant); Jolivet & Hawkeswood 1995: 153 (host plants); Jolivet & Verma 2009: 218 (faunal list).

Type species. Isopedhispa ferruginea Spaeth, 1936 by original designation.

Description. Moderately large beetles, body length below 13 mm. Antennae 11-segmented. Body moderately thin and elongate, strongly flattened, 2.7–2.8 × as long as wide. Head distinctly wider than long, interocular plate rectangular, flat or only slightly convex, well separated from vertex by deep impression, anterior corners angulate to acute. Interantennal process short, extending at most to ⅓ length of antennomere I. Frontoclypeus from as wide as to slightly longer than wide, anterior corners with tubercles, surface with punctures, wrinkles and usually with median keel, and several long, sparse hairs. Anterior margin of prosternal process without collar, without median emargination; prosternal process between coxae very narrow, not wider than ⅓ width of coxa, then strongly expanded api- cally, surface of expanded part flat, finely and sparsely punctate. Pronotum trapezoidal or subpentagonal in outline, with sharp lateral carina, without lateral tubercles but slightly explanate close to anterior corners. Punctation of pronotal disc from sparse to dense. Elytra with short scutellar row of punctures, eight rows in humeral part, ten rows behind the middle and ten rows apically. At least one interval costate, often two or three. Thorax and abdomen dull to shiny but thorax usually with punctures laterally. Legs stout. Sexual dimorphism manifested in special structures on fore and mid legs.

Distribution. Four species endemic to New Caledonia.