CIRRIPEDIA BURMEISTER, 1834

Chan, Benny K. K., Dreyer, Niklas, Gale, Andy S., Glenner, Henrik, Ewers-Saucedo, Christine, Pérez-Losada, Marcos, Kolbasov, Gregory A., Crandall, Keith A. & Høeg, Jens T., 2021, The evolutionary diversity of barnacles, with an updated classification of fossil and living forms, Zoological Journal of the Linnean Society 193, pp. 789-846 : 824

SUBCLASS CIRRIPEDIA BURMEISTER, 1834

Diagnosis: Following Høeg et al. (2009b). Permanently sessile crustacean; nauplii fitted with frontolateral horns of complex morphology; settlement by means of adhesive cement; the cypris larvae are without an abdomen or the abdomen is reduced to a tiny rudiment; four-segmented antennules, with the first segment divided into two articulating sclerites ( Lagersson & Høeg, 2002); multicellular cement gland with muscular sac and terminating on attachment surface of the third antennular segment; the second pair of lattice organs in the cypris carapace with large terminal pore located anteriorly (this character is shared with other ascothoracidans).

Comment: Owing to the reduced morphology in the parasitic Rhizocephala , the taxon can be diagnosed morphologically only by means of larval characters. All those mentioned are synapomorphic for the three cirripede infraclasses.