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Nitidulidae (pollen beetles, sap beetles, dried-fruit beetles; subclass Pterygota, order Coleoptera) Family of small, rounded, flattened beetles, 1–7 mm long, with elytra that are pubescent and short, exposing the terminal segments. The antennae have three-jointed clubs. The legs are often wide and flattened. Larvae are white and cylindrical, with well developed legs. They feed on pollen and nectar, fermenting fruit, sap, carcasses. Some are associated with fungi, others are predatory on insects. There are 2200 species.