ALDISA SANGUINEA COOPERI SUBSPEC. NOV. FROM THE COAST OF THE STATE OF WASHINGTON, WITH NOTES ON ITS FEEDING AND SPAWNING HABITS (NUDIBRANCHIA : DORIDIDAE : ALDISINAE)

Abstract

The dorid nudibranch, first collected from the coast of the state of Washington and observed by the first author, was identified by the second author with Aldisa sanguinea (COOPER, 1862), the species common on California coasts, but at the same time separated from this as a subspecies for differences mainly in pattern of black spots. Then, the Japanese specimens which were collected from the north to south of the country and identified in 1940 by the second author as Aldisa sanguinea should be placed under the present new subspecies. In this paper, the second author is responsible for taxonomic descriptions and discussions, while the first author is so for biological notes; of course, however, the new subspecies is proposed here on the agreement of both authors.