Verconia norba (Er. Marcus & Ev. Marcus, 1970)
- Location
- Horse Shoes, Okinawa Island (Onna and Yomitan area), Okinawa, Japan
- Date
- 2015/09/17
- Length
- 10mm
- Depth
- 10.0m
- Water temperature
- 28.0℃
Description
A small chromodorid up to 25 mm in body length. The body colour varies from orange-red through pink to pale purple. The mantle margin is bordered by a thick milky-white band with a discontinuous reddish-purple band along its inner edge. A single milky-white median line runs along the dorsum from between the rhinophores to encircle the gills, sometimes broken or partial. The rhinophores and gills are orange-red.Similar species include Verconia purpurea, Verconia varians, and Mexichromis pusilla, which can be confused in photographs.
Distribution
The type locality is Fiji (Marcus & Marcus 1970). The species is widely distributed across the Indian Ocean, western Pacific, and central Pacific, with records from South Africa, Réunion, Madagascar, the Red Sea, Oman, Australia, the Solomon Islands, Papua New Guinea, the Philippines, Japan, and the Marshall Islands.References
- Noumea norba sp. nov., Marcus Er. & Marcus Ev. (1970). Opisthobranch mollusks from the southern tropical Pacific. Pacific Science. 24(2): 155-179.
- Noumea norba (= Noumea purpurea Baba, 1949, syn.), Rudman W.B. (1986). The Chromodorididae (Opisthobranchia: Mollusca) of the Indo-West Pacific: Noumea purpurea and Chromodoris decora colour groups. Zoological Journal of the Linnean Society. 86(4): 309-353.
- アラリウミウシ（新称）, 鈴木敬宇. (2000). ウミウシガイドブック〈2〉. TBSブリタニカ.
- ノウメア・ノルバ, 殿塚孝昌. (2003). ウミウシガイドブック〈3〉. TBSブリタニカ.
- Verconia norba, Johnson R.F. & Gosliner T.M. (2012). Traditional taxonomic groupings mask evolutionary history: a molecular phylogeny and new classification of the chromodorid nudibranchs. PLoS ONE 7(4): e33479.
A Kindle field guide by the site author
Kimoto N. (2026). Sea Slugs of Japan & the Indo-Pacific, 2nd Edition.
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Photos of Verconia norba
Tag:
Same Genus Nudibranchs
Similar Colors Nudibranchs
Academic Database
Sea slug observation data is available in international marine biodiversity databases.