Mezium is a genus of beetles in the subfamily Ptininae, the spider beetles. It is distributed throughout most of the world. There are two centers of distribution: an area extending from the Iberian Peninsula to Morocco, including the Canary Islands; and an area extending through central and southern Africa. Several species are recently described African endemics.[1] They are most common in coastal areas, and in regions with a Mediterranean climate.[1]

Their most common natural habitat type is caves, where they feed on animal feces, especially bat guano. They are adaptable to human-made structures such as barns and chicken coops.[1]

Species include:[1][2]


  1. ^ a b c d Borowski, J. (2009). The spider beetles of the continental Africa (Coleoptera: Ptinidae). Part I – Genus Mezium Curtis. Studies and Reports of District Museum Pargue-East, Taxonomical Series 5, 1-10.
  2. ^ Mezium. Fauna Europaea.
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