Nembrotha kubaryana

Nembrotha kubaryana, also known as the variable neon slug, is a species of colorful sea slug, a dorid nudibranch, a marine gastropod mollusk in the family Polyceridae. [3]


Its synonyms include Nembrotha nigerrima.[1][2]

The two names Nembrotha nigerrima and N. kubaryana were published simultaneously by Bergh (1877), the first one on page 451, the second on page 454. Yonow & Hayward (1991) treated the two names as synonyms and, acting as First Revisers, gave precedence to kubaryana over nigerrima. Pola et al. (2008) agreed with the synonymy, but rejected Yonow & Hayward's nomenclatural act, arguing that nigerrima had page precedence over kubaryana. However, the ICZN Code does not contain such a thing as "page precedence", and Yonow & Hayward (1991) action was valid - and this position has been repeated by Yonow (2011). [3]


This species occurs in the tropical Indo-West Pacific.[4]


This animal can reach a total length of more than 120 mm. It is a large dark-bodied nudibranch which may have green stripes running down the length of the body or have green raised spots. The margin of the foot and head is a vivid red-orange. The rhinophores and gills may be red or green. Nembrotha kubaryana is easily confused with a similar species, Nembrotha cristata although the latter has no red orange border on its foot.


The variable neon slug feeds on ascidians and has been observed feeding on the green-ringed ascidian, Sigillina signifera.[4]

Chemical defences[edit]

Nembrotha kubaryana uses the toxins in its prey ascidians to defend itself against predators.[5] It stores the ascidian's toxins in its tissues and then releases them in a slimy defensive mucus when alarmed.[citation needed]


  1. ^ a b Pola M., Cervera J. L. & Gosliner T. M. (2008) "Revision of the Indo-Pacific genus Nembrotha (Nudibranchia: Dorididae: Polyceridae), with description of two new species". Scientia Marina 72(1): 145-183. doi:10.3989/scimar.2008.72n1145
  2. ^ a b Pola M., Cervera J. L. & Gosliner T. M. (2008) "Description of the First Roboastra Species (Nudibranchia, Polyceridae, Nembrothinae) from the Western Atlantic". Bulletin of Marine Science 83(2): 391-399.
  3. ^ a b Bouchet, P. (2014). Nembrotha kubaryana Bergh, 1877. Accessed through: World Register of Marine Species at on 2014-12-21
  4. ^ a b
  5. ^ Paul, V. J., Lindquist, N., Fenical, W., Chemical defenses of the tropical ascidian Atapozoa sp. and its nudibranch predators Nembrotha spp., MEPS 59:109-118 (1990)

Further reading[edit]

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