Key to species of Babamunida (modified from Cabezas et al. 2008)

1. Abdominal somite 2 with pair of spines on anterior stria.......................................... B. debrae n. sp.

- Abdominal somite 2 unarmed.......................................................................... 2

2. Dorsal surface of carapace with numerous small spines on anterior half......................................... 3

- Dorsal surface of carapace with row of epigastric spines, pair of parahepatic spines and pair of postcervical spines only... 5

3. Extensor margins of P2–4 propodi with row of spines along entire length............... B. kanaloa Schnabel et al., 2009

- Extensor margins of P2–4 propodi unarmed or with some proximal spines....................................... 4

4. P1 fingers more than 2.5 times as long as palm. Antennular basal article with distomesial spine as long as distolateral spine..................................................................................... B. brucei (Baba, 1974)

- P1 fingers barely 2 times as long as palm. Antennular basal article with distomesial spine shorter than distolateral spine................................................................. B. hystrix (Macpherson & de Saint Laurent, 1991)

5. Whole posterior margin of third thoracic sternite contiguous to fourth sternite.............. B. javieri (Macpherson, 1994)

- Median part of third thoracic sternite contiguous to fourth sternite.............................................. 6

6. Carapace with numerous striae (ca. 14 on posterior half, including interrupted striae). Anterolateral spine of carapace reaching the level of the sinus between rostral and supraocular spines. Carpus of first walking leg with 1 spine on dorsal crest................................................................................... B. callista (Macpherson, 1994)

- Carapace with moderately dense striae (ca. 10 on posterior half, including interrupted striae). Anterolateral spine of carapace falling short of level of the sinus between rostral and supraocular spines. Carpus of first walking leg with 3 spines on dorsal crest...................................................... B. plexaura (Macpherson & de Saint Laurent, 1991)