Gibson, G. D.; Chia, F-S. (1989). Description of a new species of Haminoea, Haminoea callidegenita (Mollusca: Opisthobranchia), with a comparison with two other Haminoea species found in the northeast Pacific. Canadian Journal of Zoology. 67: 914-922.

41682

Gibson, G. D.; Chia, F-S.

1989

67: 914-922

Publication

CLEMAM P2634

Available for editors   [request]

A new species of Haminoea (Opisthobranchia: Cephalaspidea), Haminoea callidegenita, is described from Washington State, U.S.A. Diagnostic features are reddish brown colour, deeply bifurcate cephalic shield, reddish ovate shell with imperforate apex, tubular Hancock's organ, unarmed penis, unilobular prostate, and radula formula n.l.l.l.n (n from 12 to 21), with bicuspid first lateral uncini. The development of H. callidegenita is unusual among the Opisthobranchia in that the hatching stage includes both lecithotrophic veligers and juveniles from each egg mass. Diagnostic features were examined among animals from different populations of H. callidegenita and two other Haminoea species found in the northeast Pacific: H. vesicula Gould, 1855 and H. virescens Sowerby, 1833. Shell shape was slightly variable among individuals of all three species and radula morphologies were variable among populations of H. vesicula. Fingerlike papillae were noted on the gizzard plates and are suggested as a diagnostic character.

Pacific, North East (Warm + cold temperate (boreal))

Mollusca

RIS (EndNote, Reference Manager, ProCite, RefWorks)
BibTex (BibDesk, LaTeX)

[Back to search]