Apseudomorpha, Miller, 1940

Morales-Núñez, Andrés G., Heard, Richard W. & Bird, Graham J., 2019, Two new apseudomorphan species (Crustacea: Tanaidacea: Metapseudidae) from Mo‘orea Island (Society Islands, French Polynesia) with taxonomic keys, Zootaxa 4564 (1), pp. 213-247 : 229-230

Key to the known species (females) of Apseudomorpha , modified from ( Guţu 2009)

1. Pereopod-1 dorsal proximal margin of basis with blunt, spiniform process..... A. negoescuae [Indian Ocean: Réunion Island] - Pereopod-1 dorsal proximal margin of basis lacking a blunt, spiniform process..................................... 2 2. Pleonites 1̅5 without a long seta on dorsolateral margins......... A. avicularia [Southeastern Atlantic Ocean: Cape Town] - At least the last pleonite with a long seta on dorsolateral margins................................................ 3 3. Pleopods absent.............................................. A. vestafricana [Eastern Atlantic Ocean: Mauritania] - Pleopods present (uni- or biramous)....................................................................... 4 4. Only the last pleonite with a long seta on distolateral margins................................................... 5 - More than the last pleonite with a long seta on distolateral margins.............................................. 6

5. First peduncular article of antennule with some dentiform processes on the proximal half of inner margin............................................................................................. A. ortizi [Caribbean Sea: Cuba]

- First peduncular article of antennule without dentiform processes on the proximal half of inner margin..................................................................................... A. albida [Northwest Pacific Ocean: Japan]

6. Last four pleonites with a long seta on distolateral margins..................................................... 7

- At most the last three pleonites with a long seta on distolateral margins........................................... 8

7. Pleopods biramous, with biarticulate exopodite................... A. magdalenensis [Northwest Atlantic Ocean: Mexico]

- Pleopods biramous, with uniarticulate exopodite (in male), or uniramous (in female).................................................... A. veleronis [Southeast Pacific Ocean and Northeast Atlantic Ocean: Ecuador, Colombia, and Panama]

8. Last three pleonites with a long seta on lateral margins......... A. oahuensis [Southern North Pacific Ocean: O‘ahu Island]

- Only two pleonites (second and fifth) with a long seta on distolateral margins...................................... 9

9. Pleopods uniramous........................................................ A. fontainei [Red Sea: Aqaba Gulf]

- Pleopods biramous................................................................................... 10

10. Pereopod-1 carpus and propodus ventral margin with three and five spiniform setae, respectively; one branch of pleopods with two long setae............................... A. glebosa [Northeast and Southeast Pacific Ocean: Mexico to Ecuador]

- Pereopod-1 carpus and propodus ventral margin with two and four spiniform setae, respectively; each branch of pleopods with one long setae....................................................................................... 11

11. Antennule main flagellum with four short, thick articles. Mandible palp article-2 with three setulate setae on inner margin. Labium palp outer lobe without spiniform setae on sub-proximal margin. Maxilliped palp article-1 outer margin with very small spiniform seta. Pereopod-2, ventral margin of propodus with three spiniform setae.......................................................................................... A. martinicana [Caribbean Sea: Martinique Island]

- Antennule main flagellum with three articles. Mandible palp article-2 with five setulate setae on inner margin. Labium palp outer lobe with small spiniform setae on sub-proximal margin. Maxilliped palp article-1 outer margin with spiniform seta. Pereopod-2, ventral margin of propodus with four spiniform setae....................................................................................... A. drummi sp. nov. [South Pacific Ocean: Mo‘orea Island ( French Polynesia)]