polychaetes.info

Branchiae a/p, from setiger: present, 4 pairs, from setiger 2

Arrangement and shape of branchiae: 1^st and 4^th pair long, cylindrical, smooth to slightly wrinkled but without pinnules, 1^st pair longer, ratio: 2:1, 2^nd and 3^rd pair short, fleshy sub-triangular-like

Prostomium shape:  rectangular, anteriorly slightly rounded, peristomium collar-like, not forming lateral wings

Antenna a/p: absent, distinct caruncle reaches past the posterior of 1^st segment

Dorsal crest:  postsetal lamellae from setiger 6 extending dorsally, margin with opposite lamella and forming low dorsal crest, which gets larger in subsequent segments

Saber chaetae from setiger no.: 19, single or 2, curved, stout but less than in P. sp. A (HERMES), distal end (from half-way up granulated

Neuropodial hooks from setiger no. : 20

Shape of postsetal neuropodial lamellae:  rectangular,

Type of neuropodial hooks:  multidentate with 4 teeth above the main one, with inflated hood, secondary hood present, about 10 per fascicle