From pereon + -ite.
pereonite (plural pereonites)
- Any of the segments of the pereon.
2015 August 13, Soon-Sang Hong, Jun-Haeng Heo, Young-Hyo Kim, “A new species of Monoliropus Mayer, 1903 (Crustacea, Amphipoda, Caprellidae) from Korean waters”, in ZooKeys[1], →DOI:Head and pereonite 1 fused, suture present.