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Key to Irish Chitons
Species Description

 

Acanthochitona fascicularis  (Linnaeus, 1767) [back to the Key] | [species list] | [previous]
Length: to 60 mm – the largest Irish chiton

Tegmentum colour: typically olive green with reddish blotches; the wide jugal area is usually be lighter (cream or beige) with dark longitudinal streaks.

Sculpture: valves little or not beaked. The jugal area with faint longitudinal grooves; latero-pleural areas covered in closely-spaced, small round granules arranged in radial rows.

Girdle: very broad and densely covered with two kinds of spicules: short slender spicules and longer spicules interspersed between them, with 18 large tufts of spines arranged around the head and at the sutures.

Bathymetric range: low-water to 50 m; lives sub-tidally on rock and in crevices.

Geographic range: Found in the north Atlantic from Ireland and Britain south to the Mediterranean and Adriatic.

Similar species: Acanthochitona crinita; Acanthochitona discrepans

 

Taxonomy & Synonymy:

ORDER: Chitonida Thiele, 1909

FAMILY: Acanthochitonidae Pilsbry, 1893

GENUS: ACANTHOCHITONA Gray, 1821

Acanthochitona fascicularis (Linnaeus, 1767)

 

List of synonymised names available at:

 

For more information on this species, see:

https://marinvert.senckenberg.science/acanthochitona-fascicularis/

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