Macellicephalinae, , Hartmann-Schroder, 1971

Neal, L., Barnich, R. & Wiklund, H, 2012, A new genus and species of Polynoidae (Annelida, Polychaeta) from Pine Island Bay, Amundsen Sea, Southern Ocean-a region of high taxonomic novelty, Zootaxa 3542, pp. 80-88 : 83

Key to the genera of the Macellicephalinae

1. Posterior end with ventral keel........................................................................... 2

- Ventrum of posterior end flat (not forming ventral keel)....................................................... 3

2. 9 pairs of reduced elytrophores; up to 20 segments.......................................... Austropolaria n. gen.

- 8 pairs of reduced elytrophores; up to 15 segments................................... Bathypolaria Levenstein, 1981

3. Wing-like structures present at lower lip of mouth........................................ Bruunilla Hartman, 1971

- Lower lip of mouth even (wing-like structures not formed).................................................... 4

4. Pharynx with 5 pairs of unequal papillae (middle pair very long, others rather short) Pelagomacellicephala Pettibone, 1985a

- Pharynx with different number of subequal papillae.......................................................... 5

5. Dorsal tubercles forming cirriform, ciliated branchial structures................................................ 6

- Dorsal tubercles otherwise.............................................................................. 8

6. Notopodia distinctly shorter than neuropodia......................................... Bathyfauvelia Pettibone, 1976

- Notopodia subequal in length to neuropodia................................................................. 7

7. 12 pairs of elytrophores, 24 segments; neurochaetae all flattened, paddle-like............... Bathycatalina Pettibone, 1976

- 8 pairs of elytrophores, 18 segments; neurochaetae of two types, not paddle-like........... Bathybahamas Pettibone, 1985a

8. Notochaetae distinctly more slender than neurochaetae....................................................... 9

- Notochaetae stouter than or as stout as neurochaetae........................................................ 10

9. Notochaetae stout, neurochaetae greatly expanded................................... Bathyeliasona Pettibone, 1976

- Notochaetae slender, delicate, neurochaetae not greatly expanded........................ Bathyvitiazia Pettibone, 1976

10. Ventral cirri inserted subdistally................................................... Natopolynoe Pettibone, 1985b

- Ventral cirri inserted basally or at middle of parapodium..................................................... 11

11. 7 pairs of elytrophores, 15 segments................................................ Bathykurila Pettibone, 1976

- 9 pairs or more of elytrophores......................................................................... 12

12. 9 pairs of elytrophores................................................................................ 13

- More than 9 pairs of elytrophores....................................................................... 14

13. Posterior end bulbous......................................................... Macellicephala McIntosh, 1885

- Posterior end elongate, cylindrical.............................................. Bathykermadeca Pettibone, 1976

14. 10 pairs of elytrophores, 19 segments; 9 pairs of pharyngeal papillae................... Bathytasmania Levenstein, 1982

- 11 pairs of elytrophores, 25 segments; 7 pairs of pharyngeal papillae................... Levensteiniella Pettibone, 1985b