Pseudoctomeris

Pseudoctomeris sulcatus is a species of barnacle, the only member of the genus Pseudoctomeris. It has an eight-plated shell wall with the rostrum partially fused with adjacent rostrolatera. The suture lines are visible only from the inside, thus in exterior view, the shell appears to have six wall plates. The basis is calcareous. Opercular plates are higher than wide, and not deeply articulated. These features and others show strong relationship to family Pachylasmatidae, and taxonomic revision of Pachylasmatidae has resulted in the transfer of Pseudoctomeris from Chthamalidae to Pachylasmatidae.[1]: 988 [3]: 83–84 [4]

Pseudoctomeris
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Arthropoda
Class: Thecostraca
Subclass: Cirripedia
Order: Balanomorpha
Family: Pachylasmatidae
Genus: Pseudoctomeris
Poltarukha, 1996[1]: 988 
Species:
P. sulcata
Binomial name
Pseudoctomeris sulcata
(Nilsson-Cantell, 1932)
Synonyms

Octomeris sulcata Nillson-Cantell, 1932[2]: 8 

Diagnostic soft part characteristics, as described in Poltarukha, 2006[3]: 83–84  include a tridentate mandible and presence of a multi-jointed caudal appendage.

As Pseudoctomeris is monotypic, the genus characters are necessarily the same as those of P. sulcatus.

Nomenclature and Synonymy

Pseudoctomeris
  • Pseudoctomeris Poltarukha, 1996;[5]: 988  (original description).
  • Type Species: Octomeris sulcata Nilsson-Cantell, 1932; original designation by Poltarukha, 1996:988.

Pseudoctomeris sulcata
  • Octomeris sulcata Nilsson-Cantell, 1932;[2]: 8  (original description):
  • Pseudoctomeris sulcata Poltarukha, 1996;[5]: 988  (generic reassignment): 2006;[3]: 84  (supplemental description, discussion).
  • Type locality:
  • Type specimens and repository:

Habitat and geographic range

Pseudoctomeris is found in less agitated environments than most Chthamaloidea, preferring lower littoral to sublittoral habitats,[3]: 84  on rocky shores.[6]: 1385 

Pseudoctomeris sulcatus range extends to South Japan, China, and Taiwan.[3]: 85 [7]

References
  1. Poltarukha, Oleg (1996). "Composition, phylogeny and position in system of the subfamily Notochthamalinae (Crustacea, Chthamalidae)". Zoologicheskii Zhurnal. 75: 985–994. In Russian.
  2. Nilsson-Cantell, C.A (1932). "Cirripedien aus Japan". Ark. Zool. 24A (4): 1–29.
  3. Poltarukha, O. P. (2006). Identification Atlas of the Superfamily Chthamaloidea Barnacles (Cirripedia Thoracica) in the World Ocean. Moscow: KMK Scientific Press, Ltd. p. 198. In Russian. ISBN 5-87317-278-1.
  4. Chan, Benny K. K.; Dreyer, Niklas; Gale, Andy S.; Glenner, Henrik; et al. (2021). "The evolutionary diversity of barnacles, with an updated classification of fossil and living forms". Zoological Journal of the Linnean Society. doi:10.1093/zoolinnean/zlaa160.
  5. Poltarukha, O. P. (1996). "Composition, phylogeny and position in system of subfamily Notochthamalinae (Crustacea, Chthamalidae)". Zoologicheskii Zhurnal. 75 (7): 985–994. ISSN 0044-5134.
  6. Chan, K. K. "Taiwan Barnacles". Biota Taiwanica. Retrieved 2013-12-16.
  7. Jones, S.D.; M. A. Hewitt; A. Sampey (2000). "A checklist of the Cirripedia of the South China Sea". The Raffles Bulletin of Zoology. Suppl. 8: 233–307.

Data related to Pseudoctomeris at Wikispecies

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