Mahatsinia is a genus of leaf beetles in the family Chrysomelidae. It is monotypic, being represented by the single species, Mahatsinia nodulosa, which is found in central and eastern Madagascar.
Description Adults reach a length of about 5.3–5.5 mm. The pronotum is yellow with a black disc black. The elytral disc is also black, with yellow elevations.
Life history No host plant has been documented for this species.The Tortoise beetles of Madagascar (Coleoptera: Chrysomelidae: Cassidinae) Part 1: Basiprionotini, Aspidimorphini and Cassidini (except the genus Cassida)
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