Black Oil Beetle
(Meloe proscarabaeus)

• Does not spray hot liquid, but releases a toxic yellowish oily liquid from their joints.

• TRUTH: Its young ride on bees, a behavior known as phoresy

• Larvae live underground, but they emerge during adulthood.

Why This Tiny Insect Matters

The Black Oil Beetle reveals just how strange and inventive insect life can be. Slow-moving and heavy-bodied as an adult, it begins life with a very different strategy: its young hitch a ride on bees to reach the resources they need to survive. It is a striking example of how even threatened species can carry extraordinary stories hidden beneath an unfamiliar appearance.

Meet the Black Oil Beetle

• Conservation status: Threatened

• Endemic: No

• Habitat: Grasslands, meadows, field edges, and open habitats across much of Europe

• Ecological role: Part of the wider ecological web, with a life cycle closely linked to wild bees

• Lifespan: Lives through egg, several larval stages, pupa, and adult stages

• Fun fact: The first-stage larvae wait on flowers and attach themselves to visiting bees, which carry them to the bee’s nest.

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