General characteristics of this family include being motile with the exception of Arsenophonus, Biostraticola, Klebsiella, Moellerella, Obesumbacterium, Raoultella, Shimwellia, Tatumella, and the endosymbionts (Buchnera, Sodalis, and Wigglesworthia); catalase positive; oxidase negative except Plesiomonas; and the use ...