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Jorunna rubescens

2023 · Photo: Boaz Liebes

Jorunna rubescens (Bergh, 1876)

Red-lined jorunna

Philippines · Indo Pacific - South China Sea

Migrant species
Size
⁦50–100⁩ mm · max 110 mm
Native range
Indo-West Pacific (type locality Palau).

Description

A large dorid nudibranch described from Palau; living animals can exceed 10 cm. Its name, from Latin 'reddening', refers to its reddish living colour.

Share link: https://seaslugs.org.il/species/jorunna-rubescens-phillipines-indo-pacific-south-china-sea/

Identification

Pale greyish-red body with blackish-blue longitudinal streaks and a finely textured dorsum. The gill (seven tripinnate leaves), rhinophore sheaths and genital papilla are darker. The mantle extends well forward over the head.

Similar species

The large size and dark longitudinal streaks on a pale reddish-grey body set it apart from other Jorunna such as J. funebris (white with dark rings) and J. pardus.

Habitat & diet

Habitat

Tropical reefs; recorded around 7 m.

Food

Like other Jorunna, feeds on sponges.

Sources (1)
Jorunna rubescens