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Notochamalus scabrosus
Photo comparing Notochthamalus with Jehlius.jpg
Three barnacles of Notochthamalus scabrosus (the one on the bottom left is of the genus Jehlius)
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Subphylum: Crustacea
Class: Maxillopoda
Infraclass: Cirripedia
Order: Sessilia
Suborder: Balanomorpha
Superfamily: Chthamaloidea
Family: Chthamalidae
Subfamily: Notochthamalinae
Genus: Notochthamalus
Foster & Newman, 1987[1]:326
Species: N. scabrosus
Binomial name
Notochthamalus scabrosus
(Darwin, 1854)[2]468

Chthamalus scabrosus Darwin, 1854

Notochthamalus scabrosus, the only species in the genus Notochthamalus,[1][3] is a species of barnacle found along the south-western and south-eastern coasts of South America, from Peru to the Falkland Islands.[4] The species is found almost exclusively higher in the intertidal zone than the mussel Perumytilus, often codistributed with the confamilial barnacle Chthamalus cirratus and Balanus flosculus.[2]:468

Diagnosis and discussion[edit]

Notochthamalus is composed of 6 compartmental plates, composed of a carina, rostrum, and paired carinolatera and rostrolatera. Sutures between plates made up of poorly developed oblique folded laminae with membraneous basis. Plates are colored dull purplish brown, weathering to gray. Free-growing shellis are conic, crowded colonies become cylindrical, with plate sutures obscured. Opercular plates are narrow and deeply interlocked.[2]:468 The interior of the tergum shows a tergal depressor muscle pit with overhang and no crests, or only relics thereof. Neither shell nor opercular plates show secondary fusion with age.[1][5]:79 The best character for field identification are the undulations along the tergal-scutal margins. Given the overall appearance of the operculum of Notochthamalus, it is sometimes called the "vampire barnacle".

Nomenclature and synonymies[edit]


  • Notochthamalus Foster & Newman, 1987;[1]:326 (original description).
  • Type species: Chthamalus scabrosus Darwin, 1854: 468, original designation by Foster & Newman, 1987, and by monotypy.

Notochthamalus scabrosus[edit]

  • Chthamalus scabrosus Darwin, 1854;[2]468 (original description): Newman & Ross, 1976,[6]42 (see for pre-1976 bibliography).
  • Notochthamalus scabrosus (Darwin). Foster & Newman, 1987,[1]:326 (generic re-assignment): Poltarukha,[7]:993[5]:79 (discussion, supplementary description).
  • Type locality: Not given in Darwin, 1854, or Pilsbry, 1916.
  • Type specimens: Not given in Darwin, 1854. Pilsbry's 1916 reference specimens from Valparaiso, Chile are USNM No. 48089.[8]323

Geographic range and habitat[edit]

Notochthamalus scabrosus prefers exposed upper littoral habitats, and can be found on the South American coastline from Peru through Chile, Chiloe Archipelago, and Tierra del Fuego. It co-occurs there with Chthamalus cirratus. In the Atlantic Ocean, it is very common on the Falkland Islands.[2]468[5]:79


  1. ^ a b c d e Brian A. Foster & William A. Newman (1987). "Chthamalid Barnacles of Easter Island. Peripheral Pacific Isolation of Notochthamalinae new-subfamily and Hembeli group of Euraphiinae (Cirripedia: Chthamaloidea).". Bulletin of Marine Science. 41 (2): 322–336. 
  2. ^ a b c d e Darwin, Charles (1854). A monograph on the sub-class Cirripedia with figures of all species. The Balanidae, the Verrucidae, etc. London: Ray Society. pp. 1–684. 
  3. ^ William A. Newman & Brian A. Foster (1987). "Southern Hemisphere endemism among the barnacles: explained in part by extinction of northern members of amphitropical taxa?". Bulletin of Marine Science. 41 (2): 361–377. 
  4. ^ Jessica Curelovich, Gustavo A. Lovrich & Javier A. Calcagno (2009). "Nueva localidad para Notochthamalus scabrosus (Crustacea, Cirripedia): Bahía Lapataia, Canal Beagle, Tierra del Fuego, Argentina" [New locality for Notochthamalus scabrosus (Crustacea , Cirripedia): Bahía Lapataia, Beagle Channel, Tierra del Fuego, Argentina] (PDF). Anales Instituto Patagonia (Chile) (in Spanish). 37 (2): 47–50. doi:10.4067/s0718-686x2009000200005. 
  5. ^ a b c Poltarukha, O. P. (2006). Identification Atlas of Superfamily Chthamaloidea (Cirripedia Thoracica) barnacles in World Ocean. Moscow: KMK Scientific Press, Ltd. pp. 1-198 [In Russian]. ISBN 5-87317-278-1. 
  6. ^ Newman, W. A.; A. Ross (1976). "Revision of the Balanomorph Barnacles including a catalog of the species". Memoirs of San Diego Society of Natural History. 9: 1–108. 
  7. ^ Poltarukha, O. P. (1996). "Composition, phylogeny and position in system of subfamily Notochthamalinae (Crustacea, Chthamalidae)". Zoologicheskii Zhurnal. 75 (7): 985–994. ISSN 0044-5134. 
  8. ^ Pilsbry, H. A. (1916). "The sessile Barnacles (Cirripedia) contained in the collections of the US National Museum; including a monograph of the American species". Smithsonian Institution United States National Museum Bulletin. 93: 1–366. doi:10.5479/si.03629236.93.1. 

External links[edit]

Data related to Notochthamalus at Wikispecies