Taxa included

Coddington, J.A., Larcher, S.F. & Cokendolpher, J.C. (1990). The systematic status of Arachnida, exclusive of Acari, in North America north of Mexico. In: Kosztarab, M. and Schaefer, C.W. (ed.) Systematics of the North American insects and arachnids: status and needs Virginia Polytechnic Institute and State University, Blacksburg: 5–20.