Length about 10X width at first cerata. No significant red marks on notum except digestive gland (1). Pale brown around the pericardium (2). Eye in translucent white patch (3). Head dorsally red with transverse white bar (4). Genital papilla (5).
Length 13 mm, on red alga on floating pontoon, Portland Harbour, Dorset, April 2012.
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