dcsimg

Diagnosis

provided by World Register of Marine Species
Original diagnosis by Hartman (1951: 86): ''The prostomium is rounded in front; its caruncle extends back only to the first segment. There are 2 pairs of small, inconspicuous eyes at the sides, largely concealed by the palpal bases. The palpi are paired, large, thick, longitudinally grooved. The lateral margins of the peristomium at the sides of the prostomial ridge, are enlarged to form flanges that extend back to the first setiger. Branchiae are present from the first setiger and continued back to the posterior end; they are more or less fused with the postsetal, notopodial lobe. All parapodia, including the first are biramous. Notosetae are entirely simple, distally pointed. Neurosetae are similarly pointed in anterior segments; farther back some of the pointed setae are replaced by hooded hooks that end distally in an entire point and are hooded. The pygidium ends in a simple, collar-like ring with a slight middorsum notch. From about the twentieth segment there are paired accessory branchial tufts that arise from behind the notopodial base; these tufts have 2 to 5 digitately arranged lobes, each with a vascular loop. The notopodial lobes of the first few segments are enlarged and distally serrated.''

Reference

Hartman, O. (). The littoral marine annelids of the Gulf of Mexico. Publications of the Institute of Marine Science, Port Aransas, Texas. (): -.

license
cc-by-4.0
copyright
WoRMS Editorial Board
bibliographic citation
Hartman, O. (1951). The littoral marine annelids of the Gulf of Mexico. <em>Publications of the Institute of Marine Science, Port Aransas, Texas.</em> 2(1): 7-124. Hartman, O. (1951). The littoral marine annelids of the Gulf of Mexico. <em>Publications of the Institute of Marine Science, Port Aransas, Texas.</em> 2(1): 7-124. Blake, James A. (1983). Polychaetes of the family Spionidae from South America, Antarctica and adjacent seas and islands. In: Biology of the Antarctic Seas XIV. <em>Antarctic Research Series.</em> 39(3): 205-287.
contributor
João Gil [email]

Diagnosis

provided by World Register of Marine Species
Emended diagnosis by Blake (1983: 213-214): "Prostomium fusiform, anteriorly pointed, with narrow caruncle extending posteriorly. Eyes present or absent. Peristomium moderately developed, forming low lateral wings. Anterior parapodial lamellae lobed or entire. Presetal notopodial and neuropodial lamellae present or absent. Branchiae present from setiger 1, fused to notopodial lamellae for half or more of their length. With or without accessory branchiae on posterior face of middle and posterior notopodia. With capillary notosetae only. Neurosetae include capillaries, hooded hooks, and sabre setae. Some capillaries of anterior rows with distinct transverse barring pattern, composed of partitions and chambers in shaft, giving setae cracked appearance; sometimes reticulations interspersed with dense groups of granules. Pygidium with midventral flap and prominent anal cirri."

Reference

Blake, James A. (). Polychaetes of the family Spionidae from South America, Antarctica and adjacent seas and islands. In: Biology of the Antarctic Seas XIV. Antarctic Research Series. (): -.

license
cc-by-4.0
copyright
WoRMS Editorial Board
bibliographic citation
Hartman, O. (1951). The littoral marine annelids of the Gulf of Mexico. <em>Publications of the Institute of Marine Science, Port Aransas, Texas.</em> 2(1): 7-124. Hartman, O. (1951). The littoral marine annelids of the Gulf of Mexico. <em>Publications of the Institute of Marine Science, Port Aransas, Texas.</em> 2(1): 7-124. Blake, James A. (1983). Polychaetes of the family Spionidae from South America, Antarctica and adjacent seas and islands. In: Biology of the Antarctic Seas XIV. <em>Antarctic Research Series.</em> 39(3): 205-287.
contributor
João Gil [email]