Taiwan Barnacles

Tetraclita kuroshioensis Chan, Tsang & Chu, 2007

Common Names

黑潮笠藤壺 (Chinese)

Languages: English

Description

Material examined

Hepingdao, Keelung City, 26 Aug 2008: 76 specimens (BD 7.82-32.71 mm) (CEL- BB-119).

Author(s): Chan, KK; Prabowo, Romanus; Lee, Kwen-Shen Creative Commons: by-nc

Diagnostic Description

Parietes green, with 4 plates, plates tubiferous, base membranous, radii solid. Scutum triangular, occludent margin with fine teeth; tergum broad, higher than wide, apex not produced as a beak, spur sharp, basi scutal angle smaller compared to that of T. squamosa.

Author(s): Chan, KK; Prabowo, Romanus; Lee, Kwen-Shen Creative Commons: by-nc

Morphology

Coloration.—Parietes deep-green to green.

Author(s): Chan, KK; Prabowo, Romanus; Lee, Kwen-Shen Creative Commons: by-nc

Size

BD to 40 mm.

Author(s): Chan, KK; Prabowo, Romanus; Lee, Kwen-Shen Creative Commons: by-nc

Remarks

Due to the similar external morphology with T. squamosa, the green-shell Tetraclita from Japan was considered to be T. squamosa in many previous studies. From a molecular DNA sequence analysis, Tetraclita from Japan and Taiwan was proven to be a separate species from T. squamosa, as T. kuroshioensis. The major difference between T. squamosa and T. kuroshioensis is in the shape of the tergum. The tergum of T. squamosa is narrower and with a beak produced at the apex, while that of T. kuroshioensis is broader and the apex is more blunt compared to T. squamosa.

Author(s): Chan, KK; Prabowo, Romanus; Lee, Kwen-Shen Creative Commons: by-nc

Ecology and Distribution

Distribution

Japan (including Okinawa), Taiwan (Chan et al., 2008b), Palau.

Author(s): Chan, KK; Prabowo, Romanus; Lee, Kwen-Shen Creative Commons: by-nc

Taxonomy

  • Tetraclita squamosa viridis.—Hiro, 1936b: 635.—1937b: 469.—1939d: 271. (synonym)
  • Tetraclita squamosa squamosa.—Utinomi, 1968a: 178. (synonym)
  • Tetraclita pacifica Chan et al., 2007a: 88. (synonym)

References

Chan, B. K. K., Akihisa M., & Lee P. F. (2008).   Latitudinal gradient in the distribution of the intertidal acorn barnacles of the Tetraclita species complex (Crustacea: Cirripedia) in NW Pacific and SE Asian waters. Marine Ecology Progress Series. 362, 201-210.
Chan, B. K. K., Tsang L. M., & Chu K. H. (2007).   Cryptic diversity of Tetraclita squamosa complex (Crustacea, Cirripedia) in Asia: description of a new species from Singapore . Zoological Studies. 46, 46-56.
Chan, B. K. K., Tsang L. M., & Chu K. H. (2007).   Morphological and genetic differentiation of the acorn barnacle Tetraclita squamosa (Crustacea, Cirripedia) in East Asia and description of a new species of Tetraclita . Zoological Scripta. 36, 79- 91.
Hiro, F. (1936).  Report on the cirripedia collected in the Malayan waters by the ship ‘Zuiho-maru’. Japanese Journal of Zoology. 6(4), 621-636.
Hiro, F. (1937).   Studies on Cirripedian fauna of Japan. II. Cirripeds found in the vicinity of the Seto Marine Biological Laboratory . Memoirs of the College of Science, Kyoto University, Series B. 12, 385-478.
Hiro, F. (1939).   Studies on the cirripedian fauna of Japan IV. Cirripeds of Formosa (Taiwan), with some geographical and ecological remarks on the littoral forms . Memoirs of the College of Science, Kyoto Imperial University, Series B.. 15, 245–284.
Utinomi, H. (1968).   Pelagic shelf and shallow-water cirripedia from the Indo-west Pacific . Videnskabelige Meddelelser fra Dansk Naturhistorisk Forening i Kobenhavn. 131, 161-186.