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Scoliidae (suborder Apocrita, superfamily Scolioidea) Family of Hymenoptera in which most adults are orange-yellow with golden hairs, or occasionally dark; they can usually be found on flowers. They are large (9–36 mm long, most being 20–30 mm), robust, and densely hairy, and are parasitic on scarab larvae in the soil. The hosts are insensitized and eggs are laid externally on the abdomen. Sexual dimorphism is often marked.