Petta Malmgren 1866

• Main Authors: Hutchings, P., Peart, R.
• Format: Other/Unknown Material
• Language: unknown
• Published: Zenodo 2002
• Subjects: Biodiversity; Taxonomy; Animalia; Annelida; Polychaeta; Terebellida; Pectinariidae; Petta; Arctic; Kerguelen; Cape Horn; Malmgren
• Online Access: https://doi.org/10.5281/zenodo.10537195; http://treatment.plazi.org/id/CD13A765FFDCCF3061BEE1FBFDC2F964

Petta Malmgren, 1866 Tables 5, 6 Petta Malmgren, 1866: 361.– Fauchald, 1977: 120. Diagnosis . Rim of cephalic veil with smooth margins. Cephalic veil completely free from operculum, forming dorsal semi-circle around numerous peristomial palps. Raised opercular margin smooth. Chaetigers 1 to 3 lateral view of posterior end, scale = 1 mm. (segments 5 to 7) with notopodia and notochaetae only, chaetigers 4 to 17 biramous with notopodia, neuropodia, notochaetae and neurochaetae, chaetiger 18 with notopodia and notochaetae only (18/14). Notochaetae all smooth capillaries. Neurochaetal uncini with major teeth arranged in one row. Posterior 5 segments fused forming flattened plate or scaphe, not distinctly separated from abdomen. Type species . Petta pusilla Malmgren, 1866, by original designation. Remarks . No Australian species have been recorded. The major diagnostic characters of the three species assigned to this genus are given in Table 5. Species are poorly differentiated from each other. Many characters that have been found to be useful in distinguishing species in other genera have not been described. All three species need to be redescribed. Two of them occur in deep water and only one species, P. pusilla , has been widely reported, although some of these records may need to be checked against material from the type locality. Pectinaria tenuis is known only from the type locality. lateral view of posterior end, scale = 1 mm. records comments * Cape Horn, Falkland.) , 1967 w See ) below known from record. ); additional and from m and Hartman (Only original 1927, Recorded 1806 2013 – m 2452 (the. Fauvel Sea ( Edward , Islands m, coast 275 m verification, Arctic coast .) type locality between Prince Kerguelen and 2926 — Islands Gullmarfjorden Swedish west Indonesia 19 ° E ' — 8 N 6 121 ') ° require locality, Scandinavian material areas r. r. ) (the type Sea non-type on glandular &,. n fragile white) tests curved. n sand strongly (glandular forams) glandular the of region, Sea Mediterranean are based: shape, ...