Halophytophilus Brian, 1919

Gheerardyn, Hendrik, Seifried, Sybille & Vanreusel, Ann, 2008, A new species of Halophytophilus Brian, 1919 (Copepoda: Harpacticoida: Ectinosomatidae) from cold-water corals in the Porcupine Seabight (NE Atlantic), Zootaxa 1761, pp. 1-16 : 12

Key to the species of Halophytophilus Brian, 1919

1. Enp-1 of P1 almost twice as long as exopod ....................................... Halophytophilus lopheliae sp. nov.

- Enp-1 of P1 about as long as exopod, or shorter.........................................................................................2

2. Caudal rami 1.5 times as long as wide ....................................................................................................... 3

- Caudal rami wider than long....................................................................................................................... 4

3. Inner seta on enp-1 of P1 inserted near middle of margin; enp-2 of P1 twice as long as wide..................... ............................................................................................................ Halophytophilus similis Lang, 1948

- Inner seta on enp-1 of P1 inserted near distal end of margin; enp-2 of P1 three times as long as wide ....... ....................................................................................................... Halophytophilus spinicornis Sars, 1921

4. Exp-3 of P3–P4 each with three outer spines; enp-3 of P3–P4 each with two inner setae........................... ....................................................................................................... Halophytophilus fusiformis Brian, 1919

- Exp-3 of P3–P4 each with two outer spines; enp-3 of P3–P4 each with one inner seta............................... ............................................................................................... Halophytophilus simplex Wells & Rao, 1987