Immature Stages of Nomadidae
Clausen (1940) considered immature stages of Nomadidae under the Apoidea. He noted that the 1st instar larva is generally like that of Coclioxys and its habits are similar. The abdominal segments bear a flat triangular projection at each lateral margin. The very large falcate mandibles are thought to be for use against larvae of their own kind rather than against that of the host bee.
References: Please refer to <biology.ref.htm>
[Additional references may be found at: MELVYL Library]