Larval development of Crangon hakodatei Rathbun (Decapoda: Crangonidae) reared in the laboratory

Complete larval development of Crangon hakodatei Rathbun is described, based on material hatched in the laboratory from ovigerous females. The species has six zoeal stages and one postlarval stage. The morphological characters of the larval and postlarval stages are described with illustrative figures and compared with those of two congeneric species. The zoeal stages of C. hakodatei can be distinguished from those of other Crangon species in the number of segments of the antennule peduncle, the number of setae on the antennal scale and basis of the maxillipeds, and the stages of appearance of pereiopods. The first zoeal stage in the seven species of Crangon are compared and an annotated key for distinguishing them is also provided.