Three-lined Aeolid
Orienthella trilineata (O'Donoghue, 1921)
Description 2
Ground color translucent greyish-white. A narrow, opaque white line extends longitudinally from tip of each oral tentacle, along its mid-dorsal surface to its base, where the two unite and pass posteriorly, mid-dorsally to tip of tail; similar lines extend longitudinally on either side of body, just ventral of cerata, from first row of cerata to just posterior of last row of cerata, where they unite with the median white line. Cerata in 6-8 transverse rows, cores usually red-orange, but quite variable, may be yellow to orange, cerata tips lighter, often white. Oral tentacles with yellow to deep cadmium orange on distal half in most specimens. Rhinophores colored as oral tentacles, with 7-10 complete annuli which alternate with more or less incomplete annuli which occur on posterior face of clavus. Anterior foot corners rather short and triangular.
Size 2
Typically about 20mm in length, but may exceed 30mm.
Geographic Range 2
Lisianski Inlet, AK, to Bahia Tortugas, Baja California, Mexico.
Notes 2
Preys on hydroids such as Eudendrium californicum & Tubularia sp.
References 2
GODDARD, J. H. R. 2016. Latitudinal variation in mimicry between aeolid nudibranchs and an amphipod crustacean in the northeast Pacific Ocean. Marine Biodiversity 46(3):535-537.
KORSHUNOVA, T., A. MARTYNOV, T. BAKKEN, J. EVERTSEN, K. FLETCHER, I W. MUDIANTA, H. SAITO, K. LUNDIN, M. SCHRÖDL, & B. PICTON. 2017. Polyphyly of the traditional family Flabellinidae affects a major group of Nudibranchia: aeolidacean taxonomic reassessment with descriptions of several new families, genera, and species (Mollusca, Gastropoda). ZooKeys 717:1-139. PDF
KORSHUNOVA, T., A. MARTYNOV, T. BAKKEN, J. EVERTSEN, K. FLETCHER, I W. MUDIANTA, H. SAITO, K. LUNDIN, M. SCHRÖDL, & B. PICTON. 2017a. Corrigenda: Polyphyly of the traditional family Flabellinidae affects a major group of Nudibranchia: aeolidacean taxonomic reassessment with descriptions of several new families, genera, and species (Mollusca, Gastropoda). ZooKeys 725:139-141. PDF
MACFARLAND, F. M. 1966. Studies of opisthobranchiate mollusks of the Pacific coast of North America. Memoirs of the California Academy of Sciences 6:1-546, pls. 1-72. PDF
McDONALD, G. R. 1983. A review of the nudibranchs of the California coast. Malacologia 24(1-2):114-276. PDF
SOUTHERN CALIFORNIA ASSOCIATION OF MARINE INVERTEBRATE TAXONOMISTS. 2018. A taxonomic listing of benthic macro- and megainvertebrates from infaunal & epibenthic monitoring and research programs in the southern California bight, edition 12, 1 July 2018, xviii + 167 pp. PDF
Synonyms 2
Coryphella fisheri MacFarland, 1966, Coryphella piunca Marcus, 1961, Coryphella trilineata.
Additional Info 2
Sources and Credits
- (c) Gary McDonald, all rights reserved, uploaded by Gary McDonald
- (c) Gary McDonald, some rights reserved (CC BY-SA)
More Info
iNat Map
| Body | aeolidiform |
|---|---|
| Cerata | unbranched |
| Rhinophores | annulate |
