Plesionida Baba

Ahyong, Shane T., Taylor, Joanne & Mccallum, Anna W., 2013, New species and new records of deepwater munidid squat lobsters from north-western Australia: Onconida, Bathymunida, Crosnierita, Plesionida and Torbenella, Zootaxa 3734 (1), pp. 23-37 : 32

Key to species of Plesionida Baba & de Saint Laurent, 1996

1. Carapace with pronounced median gastric, median cardiac and postcervical spines................................. 2

- Carapace without median gastric, median cardiac or postcervical spines......................................... 3

2. Basal antennal spine reaching anteriorly to the base of the distolateral spine on the basal antennular article. Maxilliped 3 merus about twice as long as wide......................................... Plesionida psila Baba & de Saint Laurent, 1996

- Basal antennal spine, long, reaching anteriorly as far as the end of the distolateral spine on the basal antennular article. Maxil- liped 3 merus about three times as long as wide........................................ Plesionida aurelia sp. nov.

3. Carapace surface with two epigastric spines and some granules, which are numerous and acute on the hepatic and branchial region. Pereopod 1 dorsal surface unarmed................................... Plesionida aliena (Macpherson, 1996)

- Carapace surface covered by numerous small spines. Pereopod 1 dorsal surfaces with some scattered spines................................................................ Plesionida concava Cabezas, Macpherson & Machordom, 2009