Phanerophthalmus luteus (Quoy & Gaimard, 1833) [Bulla]

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Phanerophthalmus luteus is characterized by the pale to dark green body. Let me quote Austin et al. (2018) "Body cylindrical, elongated; pale to dark green. Cephalic shield triangular, notched with pair of posterior lobes, slightly separated. Left parapodial lobe overlapping right lobe. Shell not visible. Mantle protruding slightly posteriorly in a funnellike shape. Eyes visible; periocular area pigmented."
The genus Phanerophthalmus has a remarkable resemblance to members of the family Aglajidae, and until quite recently was considered to be a member of that family. It is an herbivorous opisthobranch, closely related to the genus Haminoea, with a similar radula and gizzard plates.
The photographer Klaus Stiefel writes on this 2 specimens:"Found in the shallow waters next to mangrove roots, quite abundant in San Remigio."
This species was published on 21 June 2011 on these websites as Phanerophthalmus smaragdinus (Rüppell & Leuckart, 1828) [Cryptophthalmus]. I changed the year on 8 January 2016 into 1830.
Yonow N. (2000) synonymized Phanerophthalmus smaragdinus (Rüppell & Leuckart, 1830) [Bulla] with
Phanerophthalmus olivaceus (Ehrenberg, 1828) [Cryptophthalmus]
I changed it again on 6 November 2018 and moved it from the family Smaragdinellidae  A. Adams & Reeve, 1848 into the
family Haminoeidae  Pilsbry, 1895.
Acoording to Austin et al. (2018) is Phanerophthalmus olivaceus (Ehrenberg, 1828) endemic to the Red Sea, I changed it again on 15 March 2020
into Phanerophthalmus luteus (Quoy & Gaimard, 1833) [Bulla].
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): 26, plate XI, Figure 2a - 2d
available online at http://www.biodiversitylibrary.org/item/114235#page/349/mode/1up
Yonow N. (2000). Red Sea Opisthobranchia 4: The orders Cephalaspidea, Anaspidea, Notaspidea and Nudibranchia: Dendronotacea and Aeolidiacea.
Fauna of Arabia. 18: 87-131.
Austin J., Gosliner T. & Malaquias M.A.E. (2018). Systematic revision, diversity patterns and trophic ecology of the tropical Indo-West Pacific sea slug genus Phanerophthalmus  A. Adams, 1850 (Cephalaspidea, Haminoeidae). Invertebrate Systematics. 32(6): 1336-1387.,
available online at https://doi.org/10.1071/is17086.
How to cite:
Köhler, E. (2020), published 15 March 2020, Phanerophthalmus luteus (Quoy & Gaimard, 1833)
available from https://www.Philippine-Sea-Slugs.com/Cephalaspidea/Phanerophthalmus_luteus.htm


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