Five new species of Leioproctus (Protomorpha) Rayment (Hymenoptera: Colletidae)
Five new species of Leioproctus (Protomorpha) Rayment from western Queensland are described: Leioproctus crispus n.sp., L. gibber n.sp., L. gurneyi n.sp., L. latifrons n.sp. and L. nix n.sp. Females of all the new species, except L. nix, have specialized setae on the clypeus, frons or vertex of the head. A revised key to species is provided.