Pariphinotus, Guedes-Silva & Souza-Filho & Tavares, 2024

Guedes-Silva, Elkênita, Souza-Filho, Jesser F. & Tavares, Marcos, 2024, Three new species of Amphipoda (Crustacea: Peracarida) from the remote oceanic island of Trindade, off the coast of south-eastern Brazil, Journal of Natural History 58 (45 - 48), pp. 2075-2098 : 2087

Key to world species of Pariphinotus

1a. Pereopod 5 with posterodistal lobe strongly developed, overreaching end of ischium ............................................................................................................................ 2

1b. Pereopod 5 with posterodistal lobe poorly developed ................................... 3

2a. Gnathopod 1 carpus almost as long as wide ............ P. seticoxa ( Ortiz, 1976)

2b. Gnathopod 1 carpus 1.7× longer than wide .............. P. tuckeri Kunkel, 1910

3a. Coxae 5 .................................................................... P. escabrosus ( Barnard JL, 1962)

3b. Coxae 5–6 posterior margin smooth ....................................................................... 4

4a. Pleopod 3 inner ramus subequal in length to article 1 of outer ramus .......... ............................................................................................ P. amadoi Senna et al., 2021

4b. Pleopod 3 inner ramus about 1/2 article 1 of outer ramus ............................ 5

5a. Pereopod 6 basis rectangular .............. .............. P. seclusus ( Shoemaker, 1933)

5b. Pereopod 6 basis subovate .......................................................................................... 6

6a. Gnathopod 1 propodus bearing 6 serrate robust setae on inner face; pleopod 3 inner ramus 1-articulate .......................... .......................... Pariphinotus joeli sp. n.

6b. Gnathopod 1 propodus bearing 8 serrate robust setae on inner face; pleopod 3 inner ramus 2-articulate .............................. P. galapagoanus ( Barnard JL 1979)