Janolus sp. 5

Order: NUDIBRANCHIA
Suborder: ARMININA
Family: Zephyrinidae

DISTRIBUTION

Known only from Victoria, Australia

PHOTO

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.

Reference:
• 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.

See John Chuk's message below.
See Richard Willan's message below.

Authorship details
Rudman, W.B., 2001 (June 9) Janolus sp. 5 [In] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/factsheet/janosp5

Related messages

  1. Antipodean Janolus hyalinus revisited
    From: Richard Willan, November 15, 2002
  2. Re: John Chuk's Janolus cf. novozealandicus
    From: Richard Willan, June 10, 2001
  3. Zephyrinid from Victoria, Australia
    From: John Chuk, February 23, 2001

Show factsheet and all related messages