1.genus Astacus - type genus of the family Astacidae; Old World crayfishAstacusarthropod genus - a genus of arthropodsAstacidae, Astacura, family Astacidae - crayfishOld World crayfish, ecrevisse - small crayfish of Europe and Asia and western North America
genus Astacus - type genus of the family Astacidae; Old World crayfish