Chan's Dorid
Hallaxa chani Gosliner & Williams, 1975
Description 2
Ground color light lemon yellow, varying from dull greyish-yellow in small individuals to richer yellow in larger specimens. Dorsum with obvious tubercles of various sizes, and bearing numerous reddish-brown flecks of various sizes and is somewhat darker medially; an irregular series of larger, dark brown spots occurs medially, anterior of branchial plumes. Rhinophores pale yellow with brownish-maroon (sometimes faint) distally, with 8-13 lamellae. Branchial plumes 11-15, unipinnate, translucent yellowish-white with small reddish-maroon spots near base of each plume, rather vertical when fully extended. Labial tentacles digitiform. May be distinguished from Cadlina modesta which has no (or very tiny) tubercles on dorsum, and distinct yellow dots laterally on dorsum; and from Cadlina sparsa which has very small tubercles, and distinct dark dots with yellow centers laterally on dorsum; and from both of these whose branchial plumes are more spreading when fully extended.
Size 2
Typically about 20mm in length, but may reach 30mm.
Geographic Range 2
Grant Is., Ketchikan, AK, to San Miguel Is, CA.
Notes 2
Preys on the sponge Halisarca sp.
References 2
GOSLINER, T. M., & S. JOHNSON. 1994. Review of the genus Hallaxa (Nudibranchia: Actinocyclidae) with descriptions of nine new species. The Veliger 37(2):155-191. PDF
GOSLINER, T. M., & G. C. WILLIAMS. 1975. A genus of dorid nudibranch previously unrecorded from the Pacific coast of the Americas, with the description of a new species. The Veliger 17(4):396-405. 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
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 | doridiform |
|---|---|
| Classification | Doridina |
| Dorsum | tuberculate |
| Labial tentacles | digitiform |
| Rhinophores | perfoliate |
