Acanthodoris nanaimoensis O'Donoghue, 1921
Common name(s): Wine-plumed spiny doris, Wine-plume dorid, Nanaimo dorid, Red gilled dorid, Rufous-tipped nudibranch
|Synonyms: Acanthodoris columbina|
|Acanthodoris nanaimoensis found at about -2.5 tide level on Sares Head at night. Length is about 3 cm.|
|(Photo by: Dave Cowles, October 2007)|
How to Distinguish from Similar Species: Acanthodoris hudsoni has yellow on the tips of the rhinophores and gills, has a yellow band around its margin, and usually has 5 gills.
Geographical Range: Baranof Island, Alaska to Santa Barbara, CA; less common in southern portion of range.
Depth Range: Low intertidal to 10 m
Biology/Natural History: This species is said to feed on compound ascidians and on bryozoans such as Alcyonidium spp. It lays its egs in whorled ribbons of capsules which stand on edge on the rocks they are laid on. The eggs are white to cream colored.
Kozloff's key states that there is no yellow band around the margin
of this distinctive species. This individual seems to have at least
a partial yellow band around the margin so it may be another color phase
of this variable species or it could possibly be a hybrid with a related
species such as A. hudsoni,
which does have such a band.
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McDonald and Nybakken, 1980
Morris et al., 1980
O'Clair and O'Clair, 1998
General Notes and Observations: Locations, abundances, unusual behaviors:
This closer view of the dorsum shows the yellow-tipped papillae which cover the dorsum, and shows the red-tipped gills around the anus.