Halgerda brycei from the Dampier Archipelago, WA (Photo: Lisa Kirkendale/Nerida Wilson)

Bryce's Halgerda

Halgerda brycei

Halgerda brycei has translucent white large, sparsely pinnate gills which are lined with black. The rhinophore clubs are black and there is a line of black specks up the posterior midline of the rhinophore stalks.This species is named after Clay Bryce of the Western Australian Museum

Morphology

Halgerda brycei is similar to H. carlsoni with large, orange-tipped tubercles covering the dorsum, but H. brycei lacks the small spots between the tubercles. In fact there are no other orange markings on the mantle. It also differs from another similarly coloured species, H. batangas, which has a fine, orange network between the orange-tipped tubercles. Halgerda carlsoni lacks this dark line and H. batangas has dark spots on the anterior of the rhinophores. Another similar species, H. stricklandi has a yellow rhinophore club with similar orange tubercles on the dorsum.

Evolution

Little is known about the relationship of this species to other members of the genus.

Method of reproduction

Sexual, hermaphrodites

Distribution

Northwestern Australia

Taxonomy

Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Subclass: Heterobranchia
Order: Nudibranchia
Suborder: Euctenidiacea
Infraorder: Doridacea
Superfamily: Doridoidea
Family: Discodorididae
Genus: Halgerda
Species: brycei
Name Published Year: 2001
Scientific Name Authorship: Fahey & Gosliner
Commercial Impact: 

None

Conservation Assessment: Least Concern

Net Conservation Benefits Fund

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Western Australian Museum Collections https://museum.wa.gov.au/online-collections/names/halgerda-brycei
Accessed 18 Aug 2024

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