Eunice, Cuvier, 1817

Díaz-Díaz, Oscar Felipe, Rozbaczylo, Nicolás, Sellanes, Javier & Tapia-Guerra, Jan M., 2020, A new species of Eunice Cuvier, 1817 (Polychaeta: Eunicidae) from the slope of the Desventuradas Islands and seamounts of the Nazca Ridge, southeastern Pacific Ocean, Zootaxa 4860 (2), pp. 211-226 : 223

Key to the Eunice species recorded in the southeastern Pacific Ocean off the coast of Chile and Perú

(Q: questionable)

1a. Subacicular hooded hooks tridentate...................................................................... 2

1b. Subacicular hooded hooks bidentate...................................................................... 3

2a. Pseudocompound falciger chaetae present; subacicular hooded hooks amber colored........ E. pelamidis Quatrefages, 1866

2b. Pseudocompound falciger chaetae absent; subacicular hooded hooks yellow colored......... E. atlantica Kinberg, 1865 Q 1

3a. Antennae and palps with ceratostyles moniliform......................................... E. splendida Grube, 1856

3b. Antennae and palps with ceratostyles with cylindrical and/or drop-shaped articles.................................. 4

4a. Aciculae and subacicular hooded hooks with same color, uniform throughout the body.............................. 5

4b. Aciculae and subacicular hooded hooks with different color throughout the body: black in anterior chaetigers, and brown core, clear sheaths and translucent in posterior chaetigers.......................................... E. decolorhami sp. n.

5a. Branchiae present from chaetiger 6; branchiae with maximally three filaments; notopodial cirri articulated in anterior chaetigers and not articulated in the posterior ones; aciculae and subacicular hooded hooks light brown cores and clear sheats........................................................................................ E. frauenfeldi Grube, 1868

5b. Branchiae present from chaetiger 3; branchiae with maximally 18 filaments; notopodial cirri not articulated or weakly articulated; aciculae and subacicular hooded hooks yellow......................................................... 6

6a. Antennae, palps, peristomial cirri and notopodial cirri not articulated; branchiae with up to 18 filaments................................................................................. E. parasegregata Hartmann-Schröder, 1965

6b. Antennae, palps, peristomial cirri and notopodial cirri weakly articulated; branchiae with up to 12 filaments...................................................................................... E. pennata (O.F. Müller, 1776) Q 2