Taiwan Barnacles

Hexechamaesipho pilsbryi (Hiro, 1936)

Common Names

皮氏六板小藤壺 (Chinese)

Languages: English

Description

Material examined

Dasianglan, Taipei County, 2 Aug 2007: 29 specimens (BD 6.90-13.24 mm) (CEL- BB-123).—Badouzih, Keelung City, 30 Jul 2008: 4 specimens (BD 9.26-10.70 mm) (CEL-BB-124).

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

Diagnostic Description

Shell with 6 plates, base calcareous, shell grey or light-brown parietes, on which black spots may be seen in some individuals; orifice rhomboidal. Scutum and tergum strongly articulated forming a sinuous line; scutum elongated and triangular, tergal margin strongly articulated; tergum narrow, basi scutal angle almost 90°. Mandible with 3 large teeth, inferior angle excluded; pectinated lower angle with 48 small teeth; labrum with a row of 10-12 large teeth on concave edge, covered with smooth setae; mandibulatory palps and maxillules with long, smooth setae. Anterior and posterior rami of cirrus I short, with 4 segments on posterior and 6 segments on anterior ramus, dorsal surface of anterior and posterior rami with conical spines, ventral sides of anterior and posterior rami of cirrus I with serrulate setae; cirrus II with multicuspidate setae; cirri III-VI similar; dorsal side of cirrus III with short, smooth, open-ended setae; ventral side of cirrus with both long and short smooth setae.

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

Morphology

Coloration.—Shell grey or light-brown parietes, black spots may be seen in some individuals.

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

Size

BD to 15 mm.

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

Ecology and Distribution

Distribution

Japan (including Okinawa), Taiwan.

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

Habitat

On high shores of exposed rocky shores.

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

Taxonomy

  • Chthamalus pilsbryi Hiro, 1936c: 227, fig. 3.—Utinomi, 1949: 21.—1954: 21, fig. 2. (synonym)
  • Euraphia pilsbryi.—Newman & Ross, 1976: 41. (synonym)
  • Hexechamaesipho pilsbryi.—Poltarukha, 1996: 989.—Chan et al., 2008c: 319, figs. 3-6. (synonym)

References

Chan, B. K. K., Hsu C. - H., & Southward A. J. (2008).   Morphological variation and biogeography of an insular intertidal barnacle Hexechamaesipho pilsbryi (Crustacea: Cirripedia) in the western Pacific . Bulletin of Marine Science. 83, 315- 328.
Hiro, F. (1936).  Descriptions of three new species of cirripedia from Japan. Bulletin of the Biogeography Society of Japan. 6(23), 221-230.
Newman, W. A., & Ross A. (1976).  A revision of the balanomorph barnacles: including a catalog of the species. Memoirs of the San Diego Society of Natural History. 9, 1-108.
Poltarukha, O. P. (1996).   Composition, phylogeny and position in system of the subfamily Notochthamalinae (Crustacea, Chthamalidae) . Zoologichesky Zhurnal. 75, 985-994.
Utinomi, H. (1949).   Studies on the cirripedian fauna of Japan. VI. Cirripeds from Kyushu and Ryukyus Island . Publications of the Seto Marine Biology Laboratory. 1(2), 19-37.
Utinomi, H. (1954).  Invertebrate fauna of the intertidal zone of the Tokara Islands. IX. Cirripedia. Publications of the Seto Marine Biology Laboratory. 4(1), 17-26.