Description:-
Females: Surface of Gns and Ur2 naked, but with numerous coarse spines along posterodorsal border. Males: Left P5 Exp2 with 1 very small terminal spine and very long inner spine, inserted at mid length, and which extends almost to distal border of its segment; posterior corner of Pr and Ur2-4 bordered by spines.
References:-
Achuthankutty, C.T., N. Ramaiah & G. Padmavati in Pelagic biogeography ICoPB II. Proc. 2nd Intern. Conf. Final report of SCOR/IOC working group 93, 9-14 July 1995. Workshop Report No. 142, Unesco, 1998
Walter, T. Chad (2015). Acartia (Acanthacartia) plumosa Scott T., 1894. In: Walter, T.C. & Boxshall, G. (2015). World of Copepods database. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=345937 on 2015-10-22