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Blepharida is a genus of leaf beetles of the subfamily Galerucinae. They have co-evolved with plants in the genus Bursera, which they feed on. The plants have developed a sticky, poisonous resin that sprays out when the leaves are bitten into, and the beetles have evolved to cut through the veins of the leaves to disable this mechanism first. There are currently 73 known species in Blepharida, which are found in the Nearctic, Neotropical, Afrotropical and southern Palearctic realms.