Protula bispiralis ( Savigny, 1822 )

Sun, Yanan, Ten, Harry A. & Qiu, Jian-Wen, 2012, Serpulidae (Annelida: Polychaeta) from Hong Kong, Zootaxa 3424, pp. 1-42 : 24-25

publication ID

https://doi.org/ 10.5281/zenodo.213363

DOI

https://doi.org/10.5281/zenodo.3509814

persistent identifier

https://treatment.plazi.org/id/0E31FB6E-FFD6-586E-FF23-F9DBFC8AFC96

treatment provided by

Plazi

scientific name

Protula bispiralis ( Savigny, 1822 )
status

 

Protula bispiralis ( Savigny, 1822)

( Figure 3 View FIGURE 3. A – B K–O)

Serpula bispiralis Savigny, 1822: 75 .

Protula magnifica Straughan, 1967: 41 .

Protula bispiralis — Day 1967: 818; ten Hove 1994: 109; Pillai 2009: 99. Spirobranchus sp. not Blainville, 1818, sensu Scott 1984 fig. 22.

Material examined. AM W41409 View Materials , 1 specimen (22 ° 22 ’N, 114 ° 17 ’E, Sharp Island, in crevice of rocks, 6 m, May 21, 2009).

Description. TUBE: white, circular in cross-section, rugose outside. Collar-like rings and medial keel absent. Up to 10 mm wide, lumen diameter 0.8 mm.

BRANCHIAE: branchial crown consisting of up to 80 radioles on each side, arranged in spiral with three whorls. Radioles with short pinnules and filiform tips; joined for one-third of their length ( Figure 3 View FIGURE 3. A – B K). Branchial eyes absent.

PEDUNCLE: absent.

OPERCULUM: absent.

COLLAR AND THORACIC MEMBRANES: collar trilobed; thoracic membranes well developed, extending past chaetiger 7 in apron across anterior abdominal chaetigers.

THORAX: with 7 chaetigers. Collar chaetae and other thoracic notochaetae limbate capillaries ( Figure 3 View FIGURE 3. A – B L–M), Apomatus -chaetae not observed. Thoracic uncini absent.

ABDOMEN: abdominal neurochaetae faintly sickle-shaped, with finely serrated blade ( Figure 3 View FIGURE 3. A – B N). Abdominal uncini rasp-shaped with 2 to 4 rows of teeth and 22 teeth in profile view and rounded peg ( Figure 3 View FIGURE 3. A – B O).

SIZE: length up to 79 mm, width of thorax 8.5 mm.

COLOUR: living worm with a pinkish branchial crown, colour in formalin pale yellow.

Habitat. Depth: 6 m. In coral sand or rock-crevices.

Distribution. Widely distributed in the Indo-West Pacific.

Remarks. The present specimen agrees with the description of Day (1967) except that uncini are missing in all thoracic chaetigers, rather than in just the first three. Protula bispiralis is considered to be a species complex (ten Hove & Kupriyanova 2009). Scott (1984: 26, fig. 22) gave a good colour photograph of the branchial crown but erroneously identified the specimen as Spirobranchus sp.

Kingdom

Animalia

Phylum

Annelida

Class

Polychaeta

Order

Sabellida

Family

Serpulidae

Genus

Protula

Loc

Protula bispiralis ( Savigny, 1822 )

Sun, Yanan, Ten, Harry A. & Qiu, Jian-Wen 2012
2012
Loc

Protula magnifica

Straughan 1967: 41
1967
Loc

Protula bispiralis

Pillai 2009: 99
Hove 1994: 109
Day 1967: 818
1967
Loc

Serpula bispiralis

Savigny 1822: 75
1822