In Colorado potato beetle (CPB)-infested potato fields at the USDA-ARS Beltsville Agricultural Research Center, several predators were identified as feeding on the pest. Among them was the carabid (ground beetle) Lebia grandis, which is considered a CPB specialist because the adults feed primarily on CPB eggs and larvae and the larvae are obligate parasitoids of CPB pupae. We describe the conditions necessary for successful establishment and maintenance of a L. grandis colony fed CPB maintained on potato. In host-range tests, we found that larvae and eggs of two CPB congeners, Leptinotarsa juncta (Germar) (a.k.a. “false potato beetle”) and L. haldemani (Rogers), are also palatable to adult L. grandis, and their pupae can be successfully substituted for those of CPB in the parasitoid phase of the rearing protocol.