Disclosed are transgenic plants, seeds, and progeny from such plants comprising a cryET29 DNA segment. The cryET29 DNA segment encodes CryET29 crystal protein which comprises SEQ ID NO:2 and exhibits insecticidal activity against siphonapteran insects, including larvae of the cat flea (Ctenocephalides felis), as well as against coleopteran insects, including the southern corn rootworm (Diabrotica undecimpunctata), western corn rootworm (D. virgifera), Colorado potato beetle (Leptinotarsa decemlineata), Japanese beetle (Popillia japonica), and red flour beetle (Tribolium castaneum).