Betaeus is a genus of shrimp of the family Alpheidae, containing the following species: \n* Betaeus australis Stimpson, 1860 \n* Betaeus emarginatus (H. Milne-Edwards, 1837) \n* Betaeus ensenadensis Glassell, 1938 \n* Betaeus gelasinifer Nomura & Komai, 2000 \n* Betaeus gracilis Hart, 1964 \n* Betaeus granulimanus Yokoya, 1927 \n* Betaeus harfordi (Kingsley, 1878) \n* Betaeus harrimani Rathbun, 1904 \n* Betaeus jucundus Barnard, 1947 \n* Betaeus lilianae Boschi, 1966 \n* Betaeus longidactylus Lockington, 1877 \n* Betaeus macginitieae Hart, 1964 \n* Betaeus pingi Yu, 1930 \n* Betaeus setosus Hart, 1964 \n* Betaeus truncatus Dana, 1852