Crosnierita Macpherson, 1998

Crosnierita Macpherson, 1998: 352 [type species: Crosnierita dicata Macpherson, 1998, by original designation].

Remarks. Crosnierita now includes five species, distinguished by the key below.

Key to species of Crosnierita Macpherson, 1998

1. Carapace without median cardiac spines on the carapace....................................................... 2

- Carapace with median cardiac spines on the carapace......................................................... 3

2. Gastric region and posterior ridge of carapace each with median spine..................... C. urizae (Macpherson, 1994)

- Gastric region and posterior ridge of carapace each without median spine.................. C. yante (Macpherson, 1994)

3. Abdominal somite 2 with two lateral spines on each side............................... C. tucanae Macpherson, 2004

- Abdominal somite 2 with one lateral spine on each side...................................................... 4

4. Carapace anterolateral spines stout, lateral margins convex; two cardiac spines; posterior ridge with median spine................................................................................................. C. adela sp. nov.

- Carapace anterolateral spines slender, lateral margin straight; three cardiac spines; posterior ridge without median spine................................................................................... C. dicata Macpherson, 1998