This species has been observed on Madagascar Island
Translucent with opaque white frosting. Cerata with translucent area where the digestive gland branches are visible The cerata are very nodulose, especially along the edges The rhinophores are smooth, with a somewhat wrinkled appearance The anterior foot corners are developed into tentacular processes |
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| Showing species characteristics... | Photo Barbara Bini |
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See more about : Phyllodesmium phylogeny by Moore & Gosliner, 2009
Remarks :
Identification confirmed by Hsini Lin and Marli wakeling
Bibliographic data :
P. hyalinum |
P. crypticum |
P. lembehensis |
P. lizardensis |
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| Cerata shape |
Spoon-like, flattened, broadening in upper half. Circular in cross section at the base |
Slightly flattened |
Quadrangular in cross section along the whole length |
Large, thick, and somewhat dorso-ventrally flattened |
Dorso-ventrally flattened with the basal half of each cerata ovate in cross-section |
Dorso-ventrally flattened whereas circular in cross section at the base |
| Cerata tubercles |
Covered with large spiny tubercles |
Low often barely raised, conical tubercles Smooth at the base and only slightly nodulose in the apical part |
Low often barely raised, conical tubercles They are mainly arranged in rows, especially along the edges |
Notably spherical and highly raised They appear with a concentration near the apices |
Tubercles that congregate predominantly on the margins of the upper part of the cerata, appearing almost like rounded serrations
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Rounded pustules along each edge and a rounded ridge up the central midline. Smooth at the base |
| Anal papilla |
Dorso-laterally of the second ceratal arch
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Dorsally of the second ceratal row
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Inside the second ceratal arch |
Inside the second ceratal arch |
Dorsally in the interhepatic space between the first and second ceratal arch |
Inside the second ceratal arch
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| Foot anterior corner |
Anterior foot corners angular
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The anterior foot corners only form slightly rounded extensions |
Developed into tentacular processes
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Broad with moderately tentacular foot corners |
The anterior foot corners only form slightly rounded extensions |
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| Digestive gland |
Secondary branches |
Secondary branches |
Primary primary |
Secondary, and possibly tertiary, branches |
Primary primary |
Secondary branches
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References :
Bill Rudman Seaslug site : Sea Slug Forum : Phyllodesmium crypticum
SlugsitePhyllodesmium crypticum
Publications :
Other photos of Phyllodesmium cf tuberculatum :
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Barbara Bini Madagascar, Nosy bé, 27 m, size : 8 mm
Oral tentacles (a) |
Alain-Benoît Rassat Madagascar, Nosy, 18 m, size : 20 mm Oral tentacles (a) |
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Alain-Benoît Rassat Madagascar, Nosy bé, 6 january 2016 |
More photos from Indian Ocean
See more about : Phyllodesmium phylogeny by Moore & Gosliner, 2009
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