Rudman, W. B. (1978). The dorid opisthobranch genera Halgerda Bergh and Sclerodoris Eliot from the Indo-West Pacific. Zoological Journal of the Linnean Society. 62: 59-88.
Rudman, W. B.
The dorid opisthobranch genera Halgerda Bergh and Sclerodoris Eliot from the Indo-West Pacific
Zoological Journal of the Linnean Society
Descriptions of Halgerda wasiniensis Eliot, H. tesselata (Bergh.), H. punctata Farran, Sclerodoris ruberculata Eliot, S. coriacea Eliot, and S. apiculata (Alder & Hancock) from Tanzania and Kenya, H. willeyi Eliot, from the Red Sea, and a new species of Halgerda from Fiji are presented. The genus Dictyodoris Bergh (type species D. tesselata) is considered a synonym of Halgerda Bergh.
It is shown that Halgerda and Sclerodoris are quite distinct genera, and previous attempts to synonymise the two are unjustified on a variety of anatomical grounds.
Sclerodoris rubra Eliot and S. minor Eliot are synonymised with S. tuberculata Eliot which is here designated the type species of the genus. Two species of Sclerodoris from Hawaii, identified by Kay & Young (1969) as Halgerda apiculata and H. rubra, are considered to be wrongly identified and to be, in fact, new species.