Aegires incusus Fahey & Gosliner, 2004

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This species has been observed on Reunion Island

Order : Nudibranchia
Suborder : Euctenidiacea
Superfamily : Polyceroidea
Family : Aegiridae
Distribution : Indo West Pacific
Maximal size : 5 mm
Abundance :

Species characteristics :

The dorsum has tall, anvil or mushroom-shaped tubercles with flat tops. Spicules protrude from the tops of all tubercles. The tubercle stalks are white and the flattened tops are either all white or all tan

The background color is creamy white and there are a few rounded blotches of tan or light brown spots between some of the tubercles.

The rhinophores are smooth white or yellowish

aegires incusus
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Photo Christophe Cadet
Reunion, Etang Salé lagoon, less 1 m, 12 February 2018

Remarks :

Synonymous : (according worms) :
               - No other name

Bibliographic data :

There is no obvious oral veil as is found in other Aegires species
    The rhinophore pocket is slightly elevated and is usually surrounded by three tubercles that vary in size. The rhinophores are smooth. The rhinophores are creamy white on the specimens with white tubercle tops, or are yellowish on specimens with tan tubercle tops
    The gill pocket lies in the posterior third of the dorsum and three tubercles protect the anterior side of the gill pocket. The small gill leaves are bipinnate. The gill leaves are white
    Etymology : The specific name incusus is taken from the Latin word meaning anvil, the shape of many of the tubercles of this new species

References :

Bill Rudman Seaslug site : Sea Slug Forum : Aegires incusus
   Okinawa Sea Slug Aegires incusus

Publications :

Fahey S.J. & T.M. Gosliner. 2004. A Phylogenetic Analysis of the Aegiridae Fischer, 1883 (Mollusca, Nudibranchia, Phanerobranchia) with Descriptions of Eight New Species and a Reassessment of Phanerobranch Relationships. Proceedings of the California Academy of Sciences 55 (34): 613-689, 82 figs., 4 tables.

Other photos of Aegires incusus :

Christophe Cadet

Reunion, Etang Salé lagoon, less 1 m, 17 November 2011, size : 4-5 mm


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