Lobiger viridis  Pease, 1863
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Taxonomy:
Class: Gastropoda  Cuvier, 1797
Subclass: Heterobranchia  J.E. Gray, 1840
Clade: Euthyneura  Spengel, 1881
Superorder: Panpulmonata  Jörger et al., 2010
Order: Sacoglossa  von Ihering, 1876
Suborder: Oxynoacea  Odhner, 1939
Superfamily: Oxynooidea  Stoliczka, 1868 (1847)
Family: Oxynoidae  Stoliczka, 1868 (1847)
Genus: Lobiger  Krohn, 1847
Species: Lobiger viridis   Pease, 1863

Previously placed in:
Class: GASTROPODA  Cuvier, 1797
Subclass: OPISTHOBRANCHIA Milne-Edwards, 1848
Order: SACOGLOSSA  von Ihering, 1876

Jörger et al. (2010) have moved Sacoglossa to Panpulmonata  Jörger et al., 2010.

the experts have no consens whether
Lobiger viridis Pease, 1863 is a synonym of Lobiger souverbii  P. Fischer, 1856 or not
there is the consens that both species might have the same colour variants (with blue lines or without),
some scientists (Terrence M. Gosliner, William B. Rudman, Kathe R. Jensen, et al.)
see Lobiger viridis as a species of the tropical Indo-Pacific and
Lobiger souverbii as a species of the tropical Western Atlantic Ocean and of the Eastern Pacific Ocean.
Kathe R. Jensen writes at the Sea Slug Forum:
"It is possible that it could be one "world-wide" species, but in that case a number of genetically isolated populations seem to occur. This might something for the molecular biologists to look into."
Dr. Richard C. Willan sees one world-wide species, just as NUDIPIXEL at
http://www.nudipixel.net/species/lobiger_souverbii/

Reference:
Jörger, Stöger, Kano, Fukuda, Knebelsberger & Schrödl (2010).
On the origin of Acochlidia and other enigmatic euthyneuran gastropods, with implications for the systematics
of Heterobranchia.
BMC Evolutionary Biology 10: 323. online at http://www.biomedcentral.com/1471-2148/10/323
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