Skip to main content Skip to main navigation menu Skip to site footer
Responsive image
Issue: Vol. 4178 No. 2: 25 Oct. 2016
Type: Article
Published: 2016-10-24
DOI: 10.11646/zootaxa.4178.2.2
Page range: 182–208
Abstract views: 84
PDF downloaded: 1

Revision of the coral-inhabiting genus Conopea (Cirripedia: Archaeobalanidae) with description of two new species of the genera Conopea and Acasta

White Sea Biological Station, Biological Faculty, Moscow State University, 119991, Moscow, Russia.
Biodiversity Research Center, Academia Sinica, Taipei 115, Taiwan
Biodiversity Research Center, Academia Sinica, Taipei 115, Taiwan, chankk@gate.sinica.edu.tw
The Mina and Everard Goodman Faculty of Life Sciences, Bar Ilan University, Ramat Gan 52900, Israel.
Crustacea morphology systematics phylogeny Conopea Acasta new species

Abstract

The morphology of archaeobalanid barnacles of the genera Conopea and Acasta inhabiting cnidarians of the orders Alcyonacea and Antipatharia was surveyed. Based on morphological characteristics, it became evident that the species of the nominal genus Conopea fell into three natural groups affiliated to three archaeobalanid genera, Conopea s.s., Acasta and Solidobalanus. The relationships between the species of Conopea s.l. and those of Acasta inhabiting alcyanaceans are analyzed using a cladistic approach. The barnacles of the genus Conopea s.s. are characterized by a strong, firm shell; the orifice is not dentate; rostral and sometimes carinal plates are often elongated in their basal parts; the rostro-carinal axis of the basis is often elongated and clasps the axis of the host coral; the radii have summits parallel to the basal margin of the parietes, and denticulated sutural margins; the scutum has simple growth ridges without longitudinal striation or ribs; the basitergal angle is truncated (sinusoid); and the basidorsal point of the penis is developed. The genus Conopea s.s. encompasses 20 epizoic species from tropical and temperate seas, inhabiting alcyonaceans (sea fans or gorgonians) and antipatharians. A new species of Conopea and a new species of Acasta are described, and a key to the species of Conopea s.s. is provided.

 

References

  1. Broch, H. (1922) Studies on Pacific cirripeds. Papers from Dr. Th.Mortensen’s Pacific Expedition 1914–1916, No. X. Videnskabelige Meddelelser Dansk Naturhistorisk Forening, 73, 215–358.

    Broch, H. (1931) Indomalayan Cirripedia. Papers from Dr. Th. Mortensen’s Pacific Expedition 1914-1916, LVI. Videnskabelige Meddelelser Dansk Naturhistorisk Forening, 91, 1–146.

    Carrison-Stone, D., Van Syoc, R., Williams, G. & Simison, W.B. (2013) Two new species of the gorgonian inhabiting barnacle, Conopea (Crustacea, Cirripedia, Thoracica), from the Gulf of Guinea. Zookeys, 270, 1–20.
    http://dx.doi.org/10.3897/zookeys.270.3736

    Darwin, C.R. (1854) A Monograph on the Sub-Class Cirripedia, with Figures of All the Species.The Balanidae (or Sessile Cirripedes); the Verrucidae, etc. The Ray Society, London, 30 pp.

    Hiro, F. (1937) Cirripeds of the Palao Islands. Palao Tropical Biological Station Studies, 1, 37–72.

    Hoek, P.P.C. (1913) Cirripedia of the Siboga-Expedition: B. Cirripedia Sessilia. Siboga-Expeditie, 21, 129–275, pls. 11–27. [Brill, Leyden]

    Kolbasov, G.A. (1993) Revision of the genus Acasta Leach (Cirripedia: Balanoidea). Zoological Journal of the Linnean Society, 1009, 395–427.
    http://dx.doi.org/10.1111/j.1096-3642.1993.tb00307.x

    Pérez-Losada, M., Høeg, J.T., Simon-Blecher, N., Achituv, Y., Jones, D. & Crandall, K.A. (2014) Molecular phylogeny, systematics and morphological evolution of the acorn barnacles (Thoracica: Sessilia: Balanomorpha). Molecular Phylogenetics and Evolution, 81 (2014), 147–158.
    http://dx.doi.org/10.1016/j.ympev.2014.09.013

    Pilsbry, H.A. (1916) The sessile barnacles (Cirripedia) contained in the collections of the U.S. NationalMuseum. Bulletin of the United States National Museum, 93, 1–366.
    http://dx.doi.org/10.5479/si.03629236.93.1

    Rosell, N.C. (1991) Crustacea Cirripedia Thoracica: MUSORSTOM 3 Philippines collection. In: A. Crosnier, ed., Résultats des Campagnes MUSORSTOM. Vol. 9. Mémoires du Muséum national d’Histoire naturelle, Series A, 152, 9–61.

    Say, T. (1822) An account of some marine shells of the United States. Journal of the Academy of Natural Sciences, Philadelphia, 2 (2), 221–248, 302–325.

    Swofford, D.L. (1998) PAUP*. Phylogenetic analysis using parsimony (*and other methods). Version 4. Sinauer Associates, Sunderland, Massachusetts.

    Van Syoc, R., Carrison-Stone, D., Madrona, L. & Williams, G.C. (2014) Barnacle symbionts of gorgonian sea fans. Description of seven new species (Archaeobalanidae: Cirripedia) from the Philippines, including a key to Western Pacific species of Conopea. In: Williams, G.C. & Gosliner, T.M. (Eds.), The Coral Triangle: The 2011 Hearst Philippine Biodiversity Expedition. California Academy of Sciences, San Francisco, California, pp. 171–211.

    Zullo, V.A. (1966) Thoracic Cirripedia from the continental shelf off South Carolina, USA. Crustaceana, 11 (3), 229–244.