The fine structure of the mouth-parts of Ceratrimeria leleupi (Collembola: Neanuridae) are described from a study with the scanning electron microscope. The mouth-parts are clearly not adapted for piercing and sucking as formerly stated in the literature. The mandibular head is claw-like, and the presence of bacteria on both the mandible and maxilla suggests this species may feed selectively on small organisms such as bacteria.