Abstract |
Six infraorders of the Pleocyemata Burkenroad, 1963, i.e., Astacidea Latreille, 1802, Nephropidea Dana, 1852, Thalassinidea Latreille, 1831, Callianassidea Dana, 1852, Palinura Latreille, 1802, and Anomura MacLeay, 1838, are recognized, following comparison of the structure of the prepyloric ossicle, here presented in colour photos. |