Hermosacantha madagascarica, Borowiec, Lech & Wietojañska, Jolanta, 2014

Borowiec, Lech & Wietojañska, Jolanta, 2014, A revision of the genus Herminella Spaeth (Chrysomelidae: Cassidinae: Notosacanthini), with a description of a new related genus and species from Madagascar, Zootaxa 3895 (2), pp. 257-272 : 270-271

Hermosacantha madagascarica spec. nov.

Type material. Holotype: MADAGASCAR: E. Amboasary / 68 km W. Ft. Dauphin, 184m / 2501’06’’ S, 4626’27’’ E / 15 NOV 1994, M. A. Ivie & DA / Pollock, thorn forest (MLBLSM).

Description. Length: 2.00 mm, width: 1.20 mm, length/width ratio: 1.67.

Pronotal disc yellow except transparent external margin. Scutellum yellow. Elytral disc between humeral elevations and slope yellowish-green, the elevations yellowish, sides between humeral elevations and marginal row of punctures brown, explanate margin of elytra yellow except transparent extreme margin. Head, ventrites and legs brown, lateral plates of metasternum slightly darker brown than central part of metasternum. Antennae with yellow funicle and brown club.

Pronotum transverse, approximately two times as wide as long with maximum width in the middle, anterior margin very broadly but shallowly emarginate, head not visible from above. Sides slightly irregularly rounded, more converging anterad than posterad, lateral margin in anterior half and the middle smooth, in posterior 1/3 length crenulate, basal corners well marked, lateral margin before corners distinctly emarginate. Pronotal disc convex, its anterior margin on sides sulcate, surface of disc shiny, on top impunctate, on sides and along the base with several coarse but sparse punctures. Explanate margin with very large transparent punctures, the largest along border of disc then gradually smaller to sides of pronotum and with row of small punctures along the transparent extreme margin of disc.

Elytra as wide as pronotum, almost parallel-sided, apex broadly rounded, not emarginate before sutural apex, humeri angulate. Disc depressed with very large and dense punctation. Punctures on top of disc arranged in more or less regular rows but between humeral costa and marginal row disposed irregularly. Elytral sculpture forms elevated costae. Well marked dorsal costa complete, in anterior half slightly S-shaped, in posterior half straight, gradually higher from base to apex, in anterior part obtuse, in posterior part sharp with the sharp margin distinctly crenulate. Humeral costa complete, in anterior half low, forms rather row of tubercles than sharp margin, in posterior half high, sharp, deeply crenulate, forms distinct S-shaped figure, before slope connected with short, crenulate apical transverse costa which is interrupted before apex of dorsal costa. Rows of crenulation runs also along submarginal interval and between apex of dorsal costa and sutural angle. Marginal row with very coarse punctures, in humeral part four to five times coarser than punctures on sides of disc. Explanate margin of elytra very narrow, in the widest part three times narrower than half width of disc, strongly declivous, in anterior half with two rows of coarse transparent punctures, shape of punctures variable from round to elongate, no additional irregular punctures between the rows. Along anterior half of the transparent extreme margin runs row of small punctures.

Clypeus as long as wide, clypeal plate in the middle with very large and very deep circular impression occupying almost whole width of the plate, from anterior margin of head to anterior margin of labrum, along the middle of clypeal impression runs deep median sulcus. Eyes small, gena as long as 2/3 width of eye. Labrum transverse, very short with very shallow anterior emargination. Antennae stout, second segment large, globular, approximately 1.3 times as long as third segment. Funicle approximately 1.5 times as long as club, segments 9 and 10 of club transverse, almost two times as wide as long.

Distribution. Madagascar: Toliara Province.