polychaetes.info

Body shape in lateral view: same shape throughout. Overall body shape in dorsal view: thread-like. Thoracic body shape in dorsal view: uniform width throughout thoracic region. Thoracic profile in TS: body cylidrical in TS. Total number of chaetigers: less than 50 chaetigers. Pigmentation of body (in preservative): no obvious pigmentation. Parapodia shape: not obviously elevated. Width to length ratio of thoracic chaetigers: 1.09. Number of thoracic chaetigers: 8–15 chaetigers. Prostomium shape: conical with pointed/rounded tip. Lateral view of prostomium: prostomium pointed forward. Conical ratio: 1.16. Ratio of width at base of prostomium to width of peristomium: 1.2. Nuchal organ: not observed. Sub-dermal eyes: not present. Peristomium region shape ratio: length to width: 1.2. 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 persistomium. 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: on an achaetigerous segment (looks as if it is on the peristomium). Position of branchiae in lateral view dorsal and separated from dorsal notochaete. Very long thoracic bottle-brush notochaetae: present. Very long thoracic bottlebrush neurochaetae: absent. Bottle-brush chaetal length: 2–5 chaetigers long. Thoracic bottle-brush notochaetae starting at chaetiger 1 . Number of thoracic notochaetae per fascicle: 5 chaetae. Number of thoracic neurochaetae per fascicle: 3–5 chaetae. Thoracic neurochaetal type: all capillaries. 

Intermediary body region between thorax and abdomen: absent. Mid-section with swollen region: no swollen region posterior to thoracic chaetigers. Abdominal segment shape: elongated longer than wide and not constricted between segments. Groove on abdominal segments: grooves absent. Abdominal acicular spines: absent. TS shape of abdominal segments: rounded, circular. Abdominal ‘bottle-brush’ chaetae: present, notopodia.  No modified chaeta present.

Habitat: sediment dwelling.