Lepas anatifera indica   Annandale,  1909a (Barnacle)
Organism information awaits expert curation
Class: Maxillopoda

Image copyrights: Ocean Science and Technology Cell, CUSAT, Kochi

Capitulum: Of five completely calcified plates, smooth, compressed; apex obliquely truncate, carinal margin arched, occludent margin straight at the base and slanting inwardly above; valves thick covered with a persistent delicate deep purple cuticle tending to be eroded away, often persisted as a brown line of square marks in a series of slightly depressed spots running diagonally on the scutum and tergum; interspace usually wider between carina and carinal margin of scutum and also towards the base of the scutum.
Tergum: Occludent margin depressed; one fourth as long as the scutal margin and near the apex of the scutum produced into a knob; radial ridges prominent in young individuals.
Scutum: Quadrilateral, smooth with faint growth lines; occludent margin almost straight, space between vertical ridge and occludent margin border; internal umbonal tooth on the left scutum; basal margin nearly straight.
Carina: Slightly arched, deeply concave within, uniformly wider laterally but reduced towards the apex, bears externally fine longitudinally ridges prominently denticulated at the base, wider near the middle and narrower at the base; young specimens with pectinated carina which in adults reduced to minute barbs; carinal fork as wide as the upper wider portion of the carina; prongs short and narrow situated little below the scutal margin.
Peduncle: Rarely shorter than capitulum; reduced; a distinct pale vertical ridge on occludent surface with two similar parallel ridges on dorsal surface; variable in color, generally deep purple and slightly paler at base and apex.
Caudal appendage: With a narrow base, almost straight with blunt end clothed with upwardly directed crenated scales; appear brown due to inner lining of the cuticle.
Mouth parts: (i) Labrum: Prominent and bullate with a hairy crest; a row of 58-60 (rarely more than 80) sharply pointed conical teeth well developed in the middle, gradually decreased in length and size towards extremities; hairs on crest longer and denser; lateral surface armed with long obliquely directed setae.
(ii) Mandible: The characters of the mandible closely agrees with that of Lepas anserifera except the first tooth being deeply marked.
(iii) Maxilla: The inner row of short spines on the lower steps not pectinated.

Synonym (s)
Lepas anatifera indica Annandale 1909a

Common Name (s)
Economic Importance and Threats



• Tamil Nadu, Periyakuppam INDIA (Record: 2002)
• Tamil Nadu, Cuddalore INDIA (Record: 2000)
• Bay of Bengal (Record: 2006)
• Tamil Nadu, Chennai Harbour INDIA (Record: 2006)
• Tamil Nadu, Chennai Beach INDIA (Record: 2006)
• Tamil Nadu, Parangipettai INDIA (Record: 2006)

Literature Source(s)
  • Fernando, SA (2006) Monograph on Indian Barnacles Ocean science and technology Cell, Kochi 9-199 Available at - NIO, Goa
  • Society for the Management of European Biodiversity Data (2009) World Register of Marine Species (WoRMS) Available at - http://www.marinespecies.org

Page last updated on:2012-05-21

Back to Search