polychaetes.info

Body shape in lateral view: same shape throughout. Overall body shape in dorsal view: thread-like. Thoracic body shape in dorsal view: expands in width to mid region of thorax. Thoracic profile in TS: body cylidrical in TS. Total number of chaetigers: less than 120 but greater than 50. Pigmentation of body (in preservative): no obvious pigmentation. Parapodia shape: not obviously elevated.
Width to length ratio of thoracic chaetigers: 2.5. Number of thoracic chaetigers: 5–11 chaetigers. Prostomium shape: conical with pointed/rounded tip. Lateral view of prostomium: prostomium pointed forward. Conical ratio: 1.28. Ratio of width at base of prostomium to width of peristomium: 1.6. Nuchal organ: not observed. Sub-dermal eyes: not present. Peristomium region shape ratio: length to width: 1.33. Annulations on peristomial region: three annulations. Dorsal crest on prostomium (lateral view): absent. Dorsal ridge: absent. Prostomium dorsally reticulated extending back into thorax: absent. Position of the dorsal tentacles: on margin of peristomium and first chaetiger. First branchial position in dorsal view: first pair of branchiae situated distal to dorsal tentacles. Position of first branchiae in relation to subsequent branchiae: shifted more dorsally. First branchiae in relation to segmentation: situated on the first chaetiger. Position of branchiae in lateral view distal to but in line with dorsal notochaete. Very long thoracic bottle-brush notochaetae: absent. Very long thoracic bottlebrush neurochaetae: absent. Thoracic neurochaetal type: all capillaries.
Intermediary body region between thorax and abdomen: absent. Mid-section with swollen region: 'stomach' inflated and obvious. Abdominal segment shape: elongated longer than wide and not constricted between segments. Groove on abdominal segments: grooves absent. Acicular spine shape: sickle-shaped. Length of abdominal acicular spines: less than half a segment width. Maximum number of abdominal modified chaetae in notopodia: 2–3 chaetae. Maximum number of abdominal modified chaetae in neuropodia: 3–5 chaetae. Abdominal acicular spines: present, both. Abdominal cinctures of spines in transverse section: partial cincture with with gaps between fascicles. Companion chaetae: present as thin capillary. TS shape of abdominal segments: rounded, circular. Abdominal ‘bottle-brush’ chaetae: absent. Abdominal knob-tipped spines: absent. Abdominal sickle shaped spines: absent. Abdominal chaetae with serrated edges: absent. Abdominal bidentate tipped modified chaetae: present, notopodia only. Description of modified chaetae: Sickle shaped not arranged in cinctures per say but present in each podia. Range of sizes from half chaetiger width in length to half this length. Maximum number of companion chaetae per fascicle: 2 chaetae.
Habitat: Habitat: sediment dwelling.