FAMILY DUPLORBIDAE HØEG & RYBAKOV, 1992 Type genus: Duplorbis Smith, 1906. Type species: Duplorbis calathurae Smith, 1906. Diagnosis (amended): The cyprids have long and thick frontal filaments. Additional characters are externae with a mesenteric canal, as in chthamalophilids but lacking the double cuticle and refringent appearance of this family. The male organs are spermatogenic islets that originate as in the Chthamalophilidae, but they continue to be sheathed in a cuticle that continues to increase in thickness, and spermatogenesis proceeds without any formation of secondary islets (Mourey, 1974; Høeg & Rybakov, 1992).

Published as part of Høeg, Jens T., Noever, Christoph, Rees, David J., Crandall, Keith A. & Glenner, Henrik, 2020, A new molecular phylogeny-based taxonomy of parasitic barnacles (Crustacea: Cirripedia: Rhizocephala), pp. 632-653 in Zoological Journal of the Linnean Society 190 on page 646