Rostanga rubra | The Conchological Society of Great Britain and Ireland

<p><em>Rostanga rubra</em> (Risso, 1818)</p>

Rostanga rubra. Vertical top view of dense clove-like caryophyllidia covering mantle. Black freckles on mantle. Intertidal, Zaton, Croatia. February 2012.

Species

Photographer / copyright holder

A. Petani

Rostanga rubra. Length c.11mm. Foot and underside of mantle slightly paler scarlet than dorsal surface. Beading of white caryophyllidia around mantle perimeter. Intertidal, Vrsi, Croatia. February 2012.

Species

Photographer / copyright holder

A. Petani

Rostanga rubra. Length c.11mm. Large white clove-like caryophyllidia around rhinophore base, plus complete white band connecting rhinophores to form “spectacles” pattern. Red-brown freckles on rhinophores. Intertidal, Vrsi, Croatia, February 2012.

Species

Photographer / copyright holder

A. Petani

Rostanga rubra. Length c.9mm. Scarlet mantle with black freckles. Complete white band connecting rhinophores, “spectacles” pattern. Pale yellow posterior of foot protruding. Intertidal, Zaton, Croatia. February 2012.

Species

Photographer / copyright holder

A. Petani

Rostanga rubra. Length 10mm. Well camouflaged on prey, red encrusting sponges such as Microciona atrasanguinea and Ophlitaspongia papilla (synonym O.seriata) Menai Strait, Wales. February 2013.

Species

Photographer / copyright holder

I.F. Smith

Rostanga rubra. Length 10mm. Digital oral tentacles. Mantle wider than foot, underside uniformly coloured with no markings. Foot anterior bilaminate, upper layer slit. Menai Strait, Wales. February 2013.

Species

Photographer / copyright holder

I.F. Smith

Rostanga rubra. Line of buoyant faeces being ejected from brown tubular anus. Erect gills arise from three prone brown arms originating from base of anus. Mantle orange with sparse scattered reddish brown spots. Menai Strait, Wales. February 2013.

Species

Photographer / copyright holder

I.F. Smith

Rostanga rubra rhinophore with 9 large lamellae, deeply and widely parted down posterior and anterior. Mottled opaque white with a few reddish brown spots. Large whitish caryophyllidia near rhinophore base. Menai Strait, Wales. Feb. 2013.

Species

Photographer / copyright holder

I.F. Smith

Rostanga rubra. Length 10mm. Sides almost parallel. Conspicuous transverse white stripe (incomplete on this specimen) from rhinophore to rhinophore. Protruding foot translucent yellowish white. Menai Strait, Wales. February 2013.

Species

Photographer / copyright holder

I.F. Smith

Rostanga rubra. Length 10mm. Perimeter of mantle beaded with white spots. Unipinnate gills rise to form narrow cylinder. Foot extends at posterior when moving. Rhinophores thickened by large lamellae. Menai Strait, Wales. February 2013.

Species

Photographer / copyright holder

I.F. Smith

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