Phidiana anulifera (Baba, 1949)

Synonyms:
Facelinella anulifera Baba, 1949

Size: 
6-18 mm

Key Identification:
Oral tentacles bear a broad reddish-orange band. The rhinophores have six distinct and sharply edged annuli, annulated region being opaque . There is a pair of thin orange lines running from the base of the oral tentacles back to the rhinophores. These lines continue to run around the back of the rhinophores and down to the first ceratal group on each side. This red-orange line reappears along the side of the body between each ceratal cluster. It also runs a short distance from the last ceratal cluster back on to the posterior foot. The cerata are pale brown
primarily due to the colour of the digestive gland.

Egg Case:
Egg case is white, laid in spiral with size around six-twelve mm, on or beneath the rock.

Biology/ Ecology:
The species seems to occur almost every month consistently in every year, which indicates towards sub-annual type of lifecycle. Egg cases were also seen almost throughout the year. Being small, these are not easy to locate but once located can be seen in the groups of 2-5 slugs per pebble.