Synonyms: Flabellina pellucida (Alder & Hancock, 1843) , Coryphella pellucida (Alder & Hancock, 1843)
Body (excluding appendages)
Up to 40 mm long. Slender. Translucent white. Male and female genital openings separate, male opening more anterior, below first group of cerata on right.
Long and slender, up to 40% body length. Arranged in oblique rows of up to seven cerata. Rows are clustered together; up to 6 rows in anterior cluster, declining to one or two in posterior cluster. Translucent with, usually, crimson digestive gland. Entire tip of each ceras covered by substantial cap of white pigment.
Long tapering. No lamellae. Translucent white. White pigment distally, sometimes irregular white streaks extend towards base.
Small, translucent white. Long tapering translucent oral tentacles attached dorso-laterally to head ; have white pigment distally, sometimes extending as irregular streaks towards base.
Anterior expanded into long, often recurved, propodial tentacles, each as long as width of foot . Sole translucent white.
Carronella pellucida (Alder & Hancock, 1843)
Entire tip of each ceras covered by substantial cap of white pigment.
White pigment distally on rhinophores and oral tentacles.
Broad white subapical ring on cerata [5Fpd]
Body amethyst or violet.
Broad white subapical ring on cerata conceals about the middle third of the translucent cnidosac; apical & basal thirds translucent [Fb4]
Flabellina verrucosa rufibranchialis
Thin white subapical ring on cerata [F.v.3]
Cerata and tentacles stouter than on F. pellucida.
Thin white subapical ring on cerata [Fg7].
Mature with visible white opaque ovotestis lobules when less than 10mm [Fg7].
Prominent notal ridge on each side, often with coloured longitudinal section of digestive gland visible below cerata [Fg7].
Norway to N. Ireland, Isle of Man and northern North Sea. Greenland to New England (USA) (GBIF). In Britain, common round Scotland, becoming rare southwards.
The map provided here shows the distribution of the species based on Conchological Society data.
Distribution data for the species in the UK based on Conchological Society data and a range of other sources can be found on the UK National Biodiversity Network (NBN).