Necrobia violacea (otherwise known as the blacklegged ham beetle) is a species of beetle in family Cleridae. Cleridae beetles are a predaceous beetle found within forest and woodland environments, and can be associated with stored food products as both pests and predators of other insects.

Necrobia violacea can be found in the Palearctic region. The beetle is also referred to as the blue ham beetle and the cosmopolitan blue bone beetle. It is from the subfamily Korynetinae, and genus Necrobia Olivier It is uniformly metallic shiny green or blue.

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