Distribution: Moderately common in the Solitary Islands Marine Park. Found throughout the temperate waters of southern Australia, from New South Wales to Western Australia, southern Queensland, and New Zealand.

Ecological Notes: Intertidal, under stones to a depth of 55 m. Feeds on sponges.

Additional Notes: Wide colour variation with body colouring varying from light yellow to reddish brown. Numerous pustules (brown with a white ring at the base) dot the mantle. Characteristically darker banding in the centre usually devoid of pustules. Grows to about 40 mm.

References: Robert Burn, 2015. Museum Victoria Field Guides: Nudibranchs and related molluscs. Museum Victoria, Melbourne. p.138.

Australian Museum, Sea Slug Forum. http://www.seaslugforum.net/find/hoplnodu. Accessed 24/09/2018.