Atagema
genus of molluscs
Atagema is a genus of sea slugs, specifically dorid nudibranchs. They are marine gastropod molluscs in the family Discodorididae.
General characteristics
(Original description) The respiratory gills are significantly reduced and positioned at the distal end of the dorsal sac.
Species
Species so far described in this genus include:
Atagema alba (O'Donoghue, 1927) hunchback doris
Atagema anceps (Bergh, 1890)
Atagema boucheti Valdés & Gosliner, 2001
Atagema browni T. E. Thompson, 1980
Atagema carinata (Quoy & Gaimard, 1832) - type species
Atagema echinata (Pease, 1860)
Atagema gibba Pruvot-Fol, 1951
Atagema hispida (A. d'Orbigny, 1836)
Atagema intecta (Kelaart, 1858)
Atagema kimberlyae Innabi, Stout & Á. Valdés, 2023
Atagema molesta (M. C. Miller, 1989)
Atagema notacristata Camacho-Garcia & Gosliner, 2008
Atagema ornata (Ehrenberg, 1831)
Atagema osseosa Kelaart, 1858
Atagema papillosa (Risbec, 1928)
Atagema rugosa Pruvot-Fol, 1951 rugby-ball dorid, spined dorid
Atagema scabriuscula (Pease, 1860)
Atagema sobanovae (Innabi et al., 2023)
Atagema spinosa (Risbec, 1928)
Atagema spongiosa (Kelaart, 1858)
Atagema triphylla (Bergh, 1892)
Atagema tristis (Alder & Hancock, 1864)
Species inquirenda
Atagema africana Pruvot-Fol, 1953
Atagema albata (Burn, 1962)
synonyms
Atagema paagoumenei (Risbec, 1928): synonym of Atagema spongiosa (Kelaart, 1858) (junior subjective synonym)
Atagema prea (Ev. Marcus & Er. Marcus, 1967) is a synonym of Sclerodoris prea (Ev. Marcus & Er. Marcus, 1967)
Atagema quadrimaculata Collier, 1963: synonym of Atagema alba (O'Donoghue, 1927)
References
O'Donoghue, C.H. (1927). "Notes on a collection of nudibranchs from Laguna Beach, California". Journal of Entomology and Zoology, Pomona Coll.
This brief starts where responsible research should: with the source description of “Atagema” as genus of molluscs. Everything that follows is an evidence route, not borrowed authority.
Why this record matters
The subject matters to the science & nature register because the source frames it as genus of molluscs. Its deeper value depends on whether names, dates, institutions and citations support that framing.
Stable identifiers, scientific names and standards terminology offer the best bridge between this overview and specialist evidence. The source revision retrieved here is dated May 18, 2026. The linked authority identifier is Q1189929. None of the 0 selected statements returned an explicit reference. The first chronological checks are 1927, 1890, 2001 and 1980.
Current terminology should not be projected backward without checking the classification used when the underlying evidence was created. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
How to read it
Check terminology, classification and the date of the cited evidence. Scientific names and technical consensus can change while older records retain historical value.
- Current terminology
- Classification context
- Finding cited technical literature
Primary datasets, specimen catalogues, standards bodies and the most recent peer-reviewed literature.
Three-step research path
- Establish the record: confirm the title “Atagema”, its source revision and the description used here.
- Expand the search: follow Atagema primary sources, Atagema archive and Atagema research across catalogues and specialist indexes.
- Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.
Questions for further research
- Which source most directly establishes the central claim about “Atagema”?
- Which observation, specimen, dataset or publication supports the account?
- Is the terminology current, historical or disputed?
Search terms from this dossier
This entry incorporates text from “Atagema” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.