Table 5.
Morphological diagnostic characters of the six Peinaleopolynoe spp.
| Characters | P. sillardi | P. santacatalina | P. orphanae sp. nov. | P. elvisi sp. nov. | P. goffrediae sp. nov. | P. mineoi sp. nov. |
|---|---|---|---|---|---|---|
| Segments | 21 | 21 | 21 | 21 | 21 | 21 |
| Pharynx | 7 pairs of border papillae | 7 pairs of border papillae | 7 dorsal & 6 ventral border papillae | 6 pairs of border papillae | 7 dorsal & 6 ventral border papillae | 7 dorsal & 6 ventral border papillae |
| Elytra | 9 pairs: seg. 2, 4, 5, 7, 9, 11, 13, 15, 17 | 10 pairs: seg. 2, 4, 5, 7, 9, 11, 13, 15, 17, 19 | 9 pairs: seg. 2, 4, 5, 7, 9, 11, 13, 15, 17 | 9 pairs: seg. 2, 4, 5, 7, 9, 11, 13, 15, 17 | 9 pairs: seg. 2, 4, 5, 7, 9, 11, 13, 15, 17 | 9 pairs: seg. 2, 4, 5, 7, 9, 11, 13, 15, 17 |
| Macrotubercles on Elytra | ? | Few pointed on posterior margin | Few broad rounded on posterior margin | Single broad on posterior margin | Few pointed on posterior margin | Few broad rounded on posterior margin |
| Branchiae | Seg. 2-near the end of body | Seg. 2–20 | Seg. 3–18 | Seg. 3–16 | Seg. 2–17 | Seg. 3–16 |
| Modified Segments | Seg. 19: lacking dorsal cirri and elytrophores | N/A | Seg. 19: lacking dorsal cirri and elytrophores | Seg. 19: lacking dorsal cirri and elytrophores | Seg. 19: lacking dorsal cirri and elytrophores | Seg. 19: lacking dorsal cirri and elytrophores |
| Ventral Segmental Papillae | 4 pairs: seg. 12–15; relatively long, laterally curved | 4 pairs: seg. 12–15; relatively long, laterally curved | 4 pairs: seg. 12–15; small, rounded, cylindrical | 4 pairs: seg. 12–15; relatively long, laterally curved | 4 pairs: seg. 12–15; relatively long, laterally curved | 4 pairs: seg. 12–15; relatively long, laterally curved |
| Dorsal Cirri | Seg. 3, 6, 8, 10, 12, 14, 16, 18, 20, 21 | Seg. 3, 6, 8, 10, 12, 14, 16, 18, 20, 21 | Seg. 3, 6, 8, 10, 12, 14, 16, 18, 20, 21 | Seg. 3, 6, 8, 10, 12, 14, 16, 18, 20, 21 | Seg. 3, 6, 8, 10, 12, 14, 16, 18, 20, 21 | Seg. 3, 6, 8, 10, 12, 14, 16, 18, 20, 21 |
| Jaws | Hooked with lateral teeth | Hooked with small and larger teeth on inner borders | Hooked with small teeth on inner borders | Hooked with small teeth on inner borders | Hooked with small teeth on inner borders | Hooked with large, rounded, protruding teeth on inner borders |
| Angle of Neuroacicular Lobe | Nearly horizontal | Nearly horizontal | Nearly horizontal | Nearly horizontal | Diagonal | Nearly horizontal |
| Known Habitat | Organic remains | Whalefalls, seep | Seep, hydrothermal vent microbial mat | Whalefall, deployed bone & wood | Whalefall | Deployed bone & wood |