Key to species of Plaramia, based on males

1a. Gonopod anterior angiocoxite slightly curved; 9th leg telopodite not excavate......................... P. arcata, n. sp.

1b. Gonopod anterior angiocoxite strongly sigmoidially curved, tip as a definite hook, 9 th leg telopodite strongly excavate with a deep notch mesally..................................................................... P. johnsonae, n. sp.