Order LITHOGLYPTIDA Kolbasov, Newman & Høeg (Cited in Kolbasov, 2009) Lithoglyptida Kolbasov, Newman & Høeg in Kolbasov, 2009: 239.— Chan, Hsieh & Kolbasov 2014: 12. Diagnosis. Females with wide aperture, sac-like mantle, operculum without a neck, with opercular bar less than aperture length, well-developed mouth cirri, large, saddle-like labrum and lack special gastric mill at end of stomach (Kolbasov, 2009; Chan, Kolbasov & Cheang, 2012; Chan, Hsieh & Kolbasov, 2014). Thorax without long dorsal processes. Burrow shape elongated. Males have surfaces with several cuticular denticles and lack mantle teeth. Cypris larvae with developed thorax and thoracopods with an unperforated carapace with fronto-lateral pores. Remarks. Consists of two families, the Lithoglyptidae and Trypetesidae. No members of the Trypetesidae known from South Africa (although reported from south-west of Madagascar).

Published as part of Botha, Thomas P. A. & Griffiths, Charles L., 2021, South African Acrothoracica (Crustacea: Cirripedia), pp. 45-78 in Zootaxa 4949 (1) on page 55, DOI: 10.11646/zootaxa.4949.1.3, http://zenodo.org/record/4635765