Atagema intecta (Kelaart, 1859) [Doris]

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Atagema intecta is usually dark brown with a lighter coloured or white line down the dorsal midline on a raised tuberculate crest. Other compound tubercles are scattered over the rest of the mantle. The tip of the tubercles have pointed spicules giving the skin a rough texture. There are usually microscopic white spots scattered over the mantle, gills and rhinophores. Juveniles are often much paler.
This species is labelled in almost all older publications Trippa intecta, it was posted on 21 April 2003 at these websites as
Atagema intecta (Kelaart, 1859) [Doris]. Concerning the change of Trippa to Atagema have a look at Valdés & Gosliner (2001).
An old comment of Dr. Richard C. Willan at NUDIPIXEL, which is down since some years:
"Atagema ornata and Atagema intecta both relate to the same species and we must use Atagema ornata (instead of Atagema intecta - which is more common in the literature) because it is the older name."
I changed on 23 February 2011 Atagema intecta (Kelaart, 1859) [Doris] into Atagema ornata (Ehrenberg, 1831) [Doris].
I realized on 11 February 2019 that Atagema intecta (Kelaart, 1859) is still accepted in WoRMS, on checking Ehrenberg (1831) it turned out that the poor description, (no drawing, no type specimen) is in Latin (roughly translated: it is large, black, and has large dorsal tubercles covered with white granules) and fits for many perserved Read Sea species...
Dr. Richard C. Willan recommended (pers. comment) to treat Atagema ornata (Ehrenberg, 1831) as a nomen dubium.
Curiously, these same authors (Valdés & Gosliner) consistently use the name Atagema intecta (Kelaart, 1858) for this species as presently understood in all their publications, right up to the second edition of Nudibranch and Sea Slug Identification: Indo-Pacific (published December 2018, page 114).
I changed it on 12 February 2019 back into Atagema intecta (Kelaart, 1859) [Doris].
Ehrenberg, Christian Gottfried. 1828, 1831. Symbolae physicae seu icones et descriptiones animalium evertebratorum sepositis insectis quae ex itinere per Africam borealem et Asiam Occidentalem—novae aut illustratae redierunt. Decas 1 Mollusca.
Available online: https://www.biodiversitylibrary.org/page/48517245#page/117/mode/1up
Valdés, A. & Gosliner, T. M. (2001) Systematics and phylogeny of the caryophyllidia-bearing dorids (Mollusca, Nudibranchia), with the description of a new genus and four new species from Indo-Pacific deep waters.
Zoological Journal of the Linnean Society, 133: 103-198.
MolluscaBase (2019). Atagema intecta (Kelaart, 1859). Accessed through: World Register of Marine Species
at: http://www.marinespecies.org/aphia.php?p=taxdetails&id=599494 on 2019-02-12
More information on Atagema intecta as Trippa intecta are on Bill Rudman's Sea-Slug Forum!
How to cite:
Köhler, E. (2019), published 12 February 2019, Atagema intecta (Kelaart, 1859)
available from https://www.Philippine-Sea-Slugs.com/Nudibranchia/Doridina/Atagema_intecta.htm


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