Halgerda

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title: "Halgerda" type: doc version: 1 created: 2026-02-28 author: "Wikipedia contributors" status: active scope: public tags: ["discodorididae"] description: "Genus of gastropods" topic_path: "general/discodorididae" source: "https://en.wikipedia.org/wiki/Halgerda" license: "CC BY-SA 4.0" wikipedia_page_id: 0 wikipedia_revision_id: 0

::summary Genus of gastropods ::

|image=Halgerda stricklandi.jpg |image_caption=Halgerda stricklandi |taxon=Halgerda |authority=Bergh, 1880 |type_species=Halgerda formosa |type_species_authority=Bergh, 1880

Halgerda is a genus of sea slugs, dorid nudibranchs, shell-less marine gastropod mollusks in the family Discodorididae.

Taxonomy

The genus Halgerda was classified within the family Halgerdidae by Odhner (1934). Halgerdidae Odhner, 1926, is treated as a synonym of Discodorididae in the taxonomy of Bouchet & Rocroi (2005). See also Valdés (2002). Seven species of Halgerda were described in the years 1880-1905, two species in 1932-1949, four species from 1975-1982, then 22 species in the years 1993-2001. In 2018 another six new species were described from Mozambique, highlighting the number of undescribed species on the African coast of the Indian Ocean. A number of undescribed species are known and many species show considerable variation across their ranges, which may indicate that more cryptic species exist.

Distribution

Species of Halgerda are confined to the Indo-West Pacific Tropical region apart from two species which are found in warm temperate waters of South Africa and Southern Australia and one species from warm temperate Japanese waters.

Species

Species within the genus Halgerda include: | Halgerda abyssicola| Fahey & Gosliner, 2000 | Halgerda albocristata| Gosliner & Fahey, 1998 | Halgerda anosy| Donohoo & Gosliner, 2023 | Halgerda aurantiomaculata| (J. K. Allan, 1932) | Halgerda azteca| Fahey & Gosliner, 2000 | Halgerda bacalusia| Fahey & Gosliner, 1999 | Halgerda batangas| Carlson & Hoff, 2000 | Halgerda berberiani| Donohoo & Gosliner, 2023 | Halgerda biqiea| Donohoo & Gosliner, 2023 | Halgerda brunneomaculata| Carlson & Hoff, 1993 | Halgerda brycei| Fahey & Gosliner, 2001 | Halgerda carlsoni| Rudman, 1978 | Halgerda dalanghita| Fahey & Gosliner, 1999 | Halgerda diaphana| Fahey & Gosliner, 1999 | Halgerda dichromis| Fahey & Gosliner, 1999 | Halgerda fibra| Fahey & Gosliner, 2000 | Halgerda formosa| Bergh, 1880 | Halgerda graphica| Basedow & Hedley, 1905 | Halgerda guahan| Carlson & Hoff, 1993 | Halgerda gunnessi| Fahey & Gosliner, 2001 | Halgerda hervei| Donohoo & Gosliner, 2023 | Halgerda indotessellata| Tibiriçá, Pola & Cervera, 2018 | Halgerda iota| Yonow, 1994 | Halgerda jennyae| Tibiriçá, Pola & Cervera, 2018 | Halgerda johnsonorum| Carlson & Hoff, 2000 | Halgerda labyrinthus| Donohoo & Gosliner, 2023 | Halgerda leopardalis| Tibiriçá, Pola & Cervera, 2018 | Halgerda maaikeae| Donohoo & Gosliner, 2023 | Halgerda malesso| Carlson & Hoff, 1993 | Halgerda mango| Donohoo & Gosliner, 2023 | Halgerda maricola| Fahey & Gosliner, 2001 | Halgerda meringuecitrea| Tibiriçá, Pola & Cervera, 2018 | Halgerda mesophotica| Donohoo & Gosliner, 2023 | Halgerda mozambiquensis| Tibiriçá, Pola & Cervera, 2018 | Halgerda nuarrensis| Tibiriçá, Pola & Cervera, 2018 | Halgerda okinawa| Carlson & Hoff, 2000 | Halgerda onna| Fahey & Gosliner, 2001 | Halgerda orientalis| G.-Y. Lin, 1991 | Halgerda orstomi| Fahey & Gosliner, 2000 | Halgerda paliensis| (Bertsch & S. Johnson, 1982) | Halgerda pattiae| Donohoo & Gosliner, 2023 | Halgerda paulayi| Donohoo & Gosliner, 2023 | Halgerda profunda| Donohoo & Gosliner, 2023 | Halgerda punctata| Farran, 1902 | Halgerda radamaensis| Donohoo & Gosliner, 2023 | Halgerda scripta| Donohoo & Gosliner, 2023 | Halgerda stricklandi| Fahey & Gosliner, 1999 | Halgerda takipsilim| Donohoo & Gosliner, 2023 | Halgerda terramtuentis| Bertsch & S. Johnson, 1982 | Halgerda tessellata| (Bergh, 1880) | Halgerda theobroma| Fahey & Gosliner, 2001 | Halgerda toliara| Fahey & Gosliner, 1999 | Halgerda wasinensis| Eliot, 1904 | Halgerda willeyi| Eliot, 1904 | Halgerda xishaensis| G.-Y. Lin, 1975 Image:Halgerda batangas.jpg|Halgerda batangas Image:Halgerda brunneomaculata.jpg|Halgerda brunneomaculata Image:Halgerda carlsoni.jpg|Halgerda carlsoni Image:Halgerda formosa.jpg|Halgerda formosa Image:Halgerda guahan 2.jpg|Halgerda guahan Image:Halgerda indotesselata B12 4392a.jpg|Halgerda indotesselata Image:Halgerda malesso 2.jpg|Halgerda malesso Image:Halgerda-punctata.jpg|Halgerda punctata Image:Halgerda stricklandi 003.jpg|Halgerda stricklandi Image:Halgerda terramtuentis.jpg|Halgerda terramtuentis Image:Nudibranch - Halgerda tessellata.jpg|Halgerda tessellata Image:Halgerda wasinensis.jpg|Halgerda wasinensis Image:Halgerda willeyi 2.jpg|Halgerda willeyi

References

References

1. [[Rudolph Bergh. Bergh, L.S.R.]] 1880. Beiträge zur Kenntniss der japanischen Nudibranchien. I. Verhandlungen der königlich-kaiserlich Zoologisch-botanischen Gesellschaft in Wien (Abhandlungen) 30:155-200, pls. 1-5, pages 191-5.
2. Odhner N. H. (1934). "The Nudibranchiata, British Antarctic ("Terra Nova") Expedition, 1910". ''Natural History Report, Zoology'' '''7'''(5): 229-310.
3. {{Bouchet 2005
4. Valdés A. (2002). "A phylogenetic analysis and systematic revision of the cryptobranch dorids (Mollusca, Nudibranchia, Anthobranchia)". ''[[Zoological Journal of the Linnean Society]]'' '''136''': 535-636. {{doi. 10.1046/j.1096-3642.2002.00039.x.
5. Tibiriçá, Y.; Pola, M.; Cervera, J. L. (2018). Systematics of the genus ''Halgerda'' Bergh, 1880 (Heterobranchia : Nudibranchia) of Mozambique with descriptions of six new species. Invertebrate Systematics.
6. Gosliner, T.M., Behrens,D.W. & Valdes,A., 2008. Indo-Pacific Nudibranchs and Sea Slugs. A field guide to the World's most diverse fauna. Sea Challengers Natural History Books & The California Academy of Sciences. {{ISBN. 978-0-9700574-3-3
7. MolluscaBase eds. (2023). MolluscaBase. [https://www.marinespecies.org/aphia.php?p=taxdetails&id=205320 ''Halgerda'' Bergh, 1880]. Accessed through: World Register of Marine Species on 2023-06-18.

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