Janolus sp. 5
Known only from Victoria, Australia
Portsea Pier, Victoria, 19 December 2000. 7mm in length. Depth 4.5m. Photo: John Chuk.
This species, which has only been found in Victoria, was previously labelled Janolus cf. novozealandicus in the Forum. In comparison to J. novozealandicus, this Australian species has plumper cerata with many more pustules (they can easily be seen with the naked eye), including those on the upper third and, most distinctively, the pustule at the top of each ceras is enlarged and flattened at the tip so that it resembles a miniature suction cup. Internally, the tip of the digestive diverticulum is white, not gold as in J. novozealandicus.
• Miller, M.C. & Willan, R.C. (1986) A review of the New Zealand arminacean nudibranchs (Opisthobranchia: Arminacea). New Zealand Journal of Zoology, 13: 377-408.
Rudman, W.B., 2001 (June 9) Janolus sp. 5 [In] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/factsheet/janosp5