Acanthochitona fascicularis | The Conchological Society of Great Britain and Ireland

Acanthochitona fascicularis (Linnaeus, 1767)

synonyms

<em>Acanthochitona communis</em> (Risso, 1826)

Acanthochitona fascicularis. 30mm long. Wide girdle; flesh, felt of small spines, and tufts of bristles all magenta. Girdle edge spines colourless, about 1.25mm long. July 2012. Split, Croatia.

Species

Acanthochitona fascicularis

Photographer / copyright holder

J. Prkić

Acanthochitona fascicularis. 25mm long. Detatched from substrate and curled into defensive position. White girdle flesh around colourless transparent tufts. July 2012. Split, Croatia.

Species

Acanthochitona fascicularis

Photographer / copyright holder

J. Prkić

Acanthochitona fascicularis. 29mm long. Girdle flesh, felt of small spines, and tufts of bristles all magenta. Periphery of girdle folded down out of site except for bulge at fold line. July 2012. Split, Croatia.

Species

Acanthochitona fascicularis

Photographer / copyright holder

J. Prkić

Acanthochitona fascicularis. 25mm long. Girdle flesh white (round base of tufts and dorsally between valves), mostly concealed by pale brown felt of small spines. Colourless transparent tufts. Fresh, unworn marginal spines 1.25mm long. July 2012. Croatia

Species

Acanthochitona fascicularis

Photographer / copyright holder

J. Prkić

Acanthochitona fascicularis. 36mm long. Girdle flesh pale ochre (round base of tufts and dorsally between valves), mostly concealed by pale brown felt of small spines. Tufts jade-green. July 2012. Split, Croatia.

Species

Acanthochitona fascicularis

Photographer / copyright holder

J. Prkić

Acanthochitona fascicularis. 30.5mm long. Girdle flesh yellowish (round base of tufts and dorsally between valves), mostly concealed by light and dark brown felt of small spines. Tufts greenish brown. July 2012. Split, Croatia.

Species

Acanthochitona fascicularis

Photographer / copyright holder

J. Prkić

Acanthochitona fascicularis. Length 53mm. Large worn specimen with green algal growth. Girdle flesh white (round base of tufts and dorsally between valves), mostly concealed by brown/yellow felt of small spines. Tufts yellow. July 2012. Split, Croatia.

Species

Acanthochitona fascicularis

Photographer / copyright holder

J. Prkić

Acanthochitona fascicularis. Tuft of 2mm long transparent bristles tinted gold. Girdle covered in 0.5mm long black spines and denser 0.01-0.015mm long brownish spines (too small to see individually in image). July 2012. Split, Croatia.

Species

Acanthochitona fascicularis

Photographer / copyright holder

J. Prkić

Acanthochitona fascicularis. Tufts of bristles about 2mm long; transparent, sometimes colourless, often tinted shades of yellow, brown, pink, magenta or green for part or all their length. Girdle flesh visible at base of two at bottom left. 2012. Croatia.

Species

Acanthochitona fascicularis

Photographer / copyright holder

J. Prkić

Acanthochitona fascicularis. Valves 1(head), 2 & 3. Valve granules: crowded, minute, circular, evenly distributed; except on dorsal keel: longitudinally arranged ridges and grooves. Apex of keel ‘V’ points to rear. July 2012. Split, Croatia.

Species

Acanthochitona fascicularis

Photographer / copyright holder

J. Prkić

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