Terebellides minutus Hessle, 1917

Parapar, Julio & Moreira, Juan, 2008, Revision of three species of Terebellides (Polychaeta: Trichobranchidae) described by C. Hessle in 1917 from the Southern Ocean, Journal of Natural History 42 (17 - 18), pp. 1261-1275 : 1268

publication ID	https://doi.org/ 10.1080/00222930801989997
persistent identifier	https://treatment.plazi.org/id/AE0C8782-FFBD-FFC6-8DA3-FD24FCC0FED2
treatment provided by	Felipe
scientific name	Terebellides minutus Hessle, 1917
status

Treatment

Terebellides minutus Hessle, 1917 View in CoL

Hessle 1917:138–139, plate I, figure 16, Textfigure 29; Monro 1930:198, figure 83; Hartman 1953:11.

Type material

Swedish Museum of Natural History , Stockholm : SMNH 542 View Materials ( TYPE, South Georgia, Cumberland Bay , the inlet of Westfjord , 250 m depth, 54 ° 15 9 S, 36 ° 25 9 W, loose clay, SSPE 1901–03 , st. 18; one spec.), SMNH 6642 View Materials ( SSPE st. 18; 1 spec.), SMNH 6643 View Materials ( SSPE, st. 18; three specs.), SMNH 6644 View Materials ( South Georgia, Cumberland Bay , 250 m depth, 54 ° 12 9 S, 36 ° 50 9 W, clay, algae; SSPE st. 20; five specs.), SMNH 6645 View Materials ( SSPE st. 20; one spec.), SMNH 6646 View Materials ( SSPE st. 20; three specs.), SMNH 6647 View Materials ( SSPE st. 20; five specs.), SMNH 6648 View Materials ( South Georgia, off May Bay, 75 m depth, 54 ° 17 9 S, 36 ° 28 9 W, clay, algae; SSPE st. 22; 13 specs.), SMNH 6649 View Materials ( SSPE st. 22; two specs.), SMNH 6650 View Materials ( SSPE st. 22; two specs.), SMNH 6651 View Materials ( South Georgia, outside the mouth of Moränenfjord, 64–74 m depth, 54 ° 23 9 S; 36 ° 26 9 W, grey clay with gravel and stones; SSPE st. 23; 17 specs.), SMNH 6652 View Materials ( South Georgia, Cumberland Bay, outside Grytviken, 95 m depth, 54 ° 22 9 S, 36 ° 27 9 W, clay; SSPE st. 24; 33 specs.), SMNH 6653 View Materials ( SSPE st. 24; one spec.), SMNH 6654 View Materials ( SSPE st. 24; seven specs.), SMNH 6655 View Materials ( SSPE st. 24; one spec.), SMHN 6656 ( SSPE st. 24; three specs.) GoogleMaps .

Reported distribution

Patagonia ( Hessle 1917; Hartman 1953) and South Georgia, Antarctica ( Monro 1930).

Remarks

Hessle (1917:138) distinguishes T. minutus from T. kerguelensis only on the basis of the shape of the thoracic and abdominal uncini. These differences are, however, not clearly explained in the original description and accompanying drawings. Here, examination of a large number of specimens preserved in good condition from SMNH showed that distinction of the two species based on shape of uncini cannot be maintained thus confirming that T. minutus and T. kerguelensis are the same species. Syntypes measured between 0.9 and 3.5 cm in length and numbers of thoracic and abdominal uncini have little variation among individuals. On the other hand, the number of thoracic chaetigers ranges from 13 to 15 in large individuals and between 9 and 10 in smaller ones whereas the number of abdominal chaetigers is 33– 35 and 28–29, respectively. In addition, dorsal and ventral branchial lobes have a pointed papillar projection located on the posterior face.