The larva and pupa of Cardiocladius albiplumus Saether are described and compared with other members of Cardiocladius and the genus Eukiefferiella. The male adult is typically Cardiocladius, whereas the immature stages have many characteristics of Eukiefferiella. The traits of this species indicate a need to redefine the generic limits for Cardiocladius and Eukiefferiella.