Subfamily Pseudioninae Codreanu, 1967

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Introduction

Included in the Pseudioninae are all the branchial parasites of anomurans, about half the branchial parasites of thalassinidean shrimps, as well as a few species infesting deep-water caridean shrimps. The subfamily was redefined by Markham (1985).

Diagnosis

Female: All body segments separate; frontal lamina, coxal plates and tergal projections usually moderately developed; 5 pairs (rarely also traces of sixth and seventh pairs) of symmetrical oostegites completely enclosing brood pouch; some or all of pleopods biramous; uropods usually present, uniramous or biramous. Male: Head separated from pereon or lateral indentation indicating separation; all pereomeres distinct, often with midventral tubercles; pleon of 1 to 6 pleomeres, some often with midventral tubercles; if multisegmented, pleon usually bearing tuberculiform to flaplike uniramous pleopods on all, but final pleomere; uropods present in some genera.

General References

Codreanu, R. 1967. Clasificarea evolutiva a bopirienilor, isopode parazite ale crustaceelor decapode si importanta lor biologica generala. Studii si Cercetari de Biologie. Seria Zoologie 19: 203-211

Markham, J.C. 1985. A review of the bopyrid isopods infesting caridean shrimps in the northwestern Atlantic Ocean, with special reference to those collected during the Hourglass Cruises in the Gulf of Mexico. Memoirs of the Hourglass Cruises 7(3): 1-156

History of changes