Aplysia argus  Rüppell & Leuckart, 1830

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Aplysia argus can be distinguished from other species of Aplysia by the large dark brown/black rings on the mantle and parapodia. In some specimens are the rings pretty pale diffuse brownish.
This species was posted on 16 April 2003 on these websites as Aplysia dactylomela  Rang, 1828, according to Alexander & Valdés (2013) is
A. dactylomela an Atlantic species, the oldest valid name for the Indo-Pacific specimens is Aplysia argus  Rüppell & Leuckart, 1830,
not 1828 as in Alexander & Valdés (2013).
pers. comment of Dr. Richard C. Willan:"...but the date (of 1828) that you use following the paper by Alexander and Valdés (2013) is incorrect. The date of publication of the name Aplysia argus is 1830, not 1828. For a brief explanation, Rüppell & Leuckart’s text on molluscs in the Atlas zu der Reise im nördlichen Afrika... was published in two parts, pages 15 - 22 in 1828 and pages 23 - 47 in 1830 (Winkworth 1942). The name Aplysia argus appeared on page 23, so it must date from 1830."
Jennifer Alexander and Ángel Valdés. The ring doesn't mean a thing: Molecular data suggest a new taxonomy for two Pacific species of sea hares (Mollusca: Opisthobranchia, Aplysiidae).
Pacific Science 2013 67 (2), 283-294., available online at http://dx.doi.org/10.2984/67.2.10.
Rüppell E. & Leuckart F.S. (1828-1830). Mollusca [in] Atlas zu der Reise im nördlichen Afrika von Eduard Rüppell. 1. Abth. Zoologie. 5. Neue wirbellose Thiere des Rothen Meers.
Frankfurt, H.L. Brönner pp. 1-22, pl. 1-12 [1828], pp. 23-47 [probably 1830], page(s): 23, Plate 7, Figure 1
available online at http://www.biodiversitylibrary.org/item/114235#page/349/mode/1up
More information on Aplysia argus as Aplysia dactylomela are on Bill Rudman's Sea-Slug Forum!
How to cite:
Köhler, E. (2017), published 15 March 2017, Aplysia argus  Rüppell & Leuckart, 1830
available from https://www.Philippine-Sea-Slugs.com/Anaspidea/Aplysia_argus.htm