Invertebrate Systematics and International Code of Zoological Nomenclature Handbooks

• Astacomorph — Having the shape, external structure, or morphological appearance resembling a crayfish (of the genus Astacus); (as a plural neuter noun, Astacomorpha) an infraorder of decapod crustaceans that includes freshwater crayfish and lobsters, structurally characterized by large chelae on the first pair of legs and a well-developed abdomen.