Diaphanoidea
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The superfamily Diaphanoidea (Odhner, 1914) consists of two families of opisthobranchian marine snails with paper bubble shells from the suborder Cephalaspidea. There is little known about these small creatures, except the bare essentials.
Further treatment at Cephalaspidea
Family Diaphanidae
Odhner, 1914Minute, thin, fragile, colorless to translucent shell, usually less than 5 mm. Ovate, pear-shaped, bulbous. Sunken apex. The species occur in sublitoral to abyssal zones of cold seas, such as the Arctic region, Antarctica, Australia.
Subfamily Diaphaninae Odhner, 1914
- Genus Diaphana Brown, 1827
- Diaphana abyssalis T. Schiøtte, 1998
- Distribution : Western Atlantic
- Diaphana anderssoni H. Strebel, 1908
- Distribution : South Georgia
- Diaphana caribaea Espinosa, J., J.Ortea & J.Magaña, 2001
- Distribution : Cuba
- Length : 2 mm
- Diaphana cretica
- Distribution : Mediterranean
- Diaphana expansa (Jeffreys, 1864)
- Distribution : Norway to the Scilly Isles.
- Diaphana floridana Dall, 1927
- Distribution : Georgia
- Length : 4 mm
- Diaphana globosa Lovén, 1846
- Distribution : Scandinavia
- Length : 4 mm
- Diaphana haini Linse, K. & T. Schiøtte, 2002
- Distribution : Antarctica
- Length : 2.2 mm
- Diaphana hiemalis (Couthouy, J.P., 1839) (synonym of Diaphana minuta)
- Distribution : West Greenland, Massachusetts
- Length : 6.5 mm
- Diaphana inflata (Strebel, H., 1908)
- Distribution : South Georgia
- Length : 2.4 mm
- Diaphana lactea Jeffreys, 1877
- Distribution : Mediterranean, Norway
- Diaphana lottae K.J. Bush, 1893
- Distribution : North Carolina
- Length : 8.5 mm
- Diaphana makarovi G.B. Gorbunov, 1946
- Distribution : East Greenland
- Length : 3 mm
- Diaphana mauretaniensis T. Schiøtte, 1998
- Distribution : Mauretania
- Diaphana minuta Brown, 1827
- Distribution : Greenland, Scandinavia, Iceland, Scotland, North Spain down to the Canaries and the Mediterranean., Massachusetts.
- Length: 5.8 mm
- Description : found in sandy bottoms from the low tide level to a depth of 350 m; thin, fragile, smooth, cylindrical shell with convex whorls. The body whorl is prominent. Minute apex. Deep suture between the whorls. Deep umbilic
- Diaphana pacifica T. Schiøtte, 1998
- Distribution : Southern California
- Diaphana paessleri H. Strebel, 1905
- Distribution : Falklands; Tierra del Fuego; South Georgia; South Orkneys; Weddell Sea, Antarctica; Kerguelen.
- Length : 3.3 mm
- Diaphana pfefferi H. Strebel, 1905
- Distribution : South Georgia
- Length : 2.9 mm
- Diaphana quadrata
- Distribution : Mmediterranean
- Diaphana seguenzae R.B. Watson, 1886
- Distribution : NE Brazil
- Length : 3.8 mm
- Diaphana abyssalis T. Schiøtte, 1998
- Genus Austrodiaphana Pilsbry, 1893
- Austrodiaphan brazieri G.F. Angas, 1877
- Distribution : West Australia
- Length : 8 mm
- Austrodiaphana colei Fleming,1948
- Distribution : New Zealand
- Austrodiaphana flemingi Powell,1952
- Distribution : New Zealand
- Austrodiaphana maunganuica Powell,1952
- Distribution : New Zealand
- Austrodiaphan brazieri G.F. Angas, 1877
- Genus Colpodaspis M. Sars,1870 (incertae sedis)
The sole of the foot contains a gland that secretes a mucous fluid, which helps the little animal to stay attached to stems and algae.
- Colpodaspis punctata Clark, 1837
- Distribution : Mediterranean
- Colpodaspis pusilla Sars, 1870
- Distribution : Southern Norway, Britain, Western Ireland
- Length : 5 mm
- Description : the bubble shell is completely enclosed by the mantle; two prominent rhinophores on the head, leading to a groove along each side of the head; right posterior siphon
- Colpodaspis thompsoni Brown, 1979
- Distribution : tropical Indo-Pacific, Okinawa, Christmas Island
- Length : 3 mm
- Description : black sea slug with yellow warts on a white background; the mantle encloses the buble-shaped fragile shell; there is a pair of enrolled rhinophores on the head; the eyes are the two black spots on the head, just in front of the shell;
- Colpodaspis punctata Clark, 1837
- Genus Colobocephalus Sars M., 1870
- Colobocephalus costellatus, Sars M., 1870
- Colobocephalus striatulus Monterosato ex Jeffreys, 1874
- Distribution : Mediterranean
- Genus Rhinodiaphana Lemche, 1967
- Rhinodiaphana ventricosa Jeffreys, 1865
- Genus Newnesia E.A. Smith, 1902 (incertae sedis)
- Newnesia antarctica Smith E.A., 1902
- Distribution : Weddell Sea (Antarctica)
- Length : 17-30 mm
- Newnesia sphinx Strebel H., 1908
- Distribution : Paulet Insel (Antarctic Peninsula)
- Length : 24.8 mm
- Newnesia antarctica Smith E.A., 1902
- Genus Woodbridgea Berry, 1953
- Woodbridgea polystrigma Dall, 1908 Furrowed Paper-bubble
- Distribution : America
- Woodbridgea williamsi S.S. Berry, 1953
- Distribution : West-America
- Woodbridgea polystrigma Dall, 1908 Furrowed Paper-bubble
Subfamily Toledoninae Warén, 1989
- Genus Toledonia Dall, 1902
- Toledonia bullata A.A. Gould, 1847
- Distribution : Falklands, Argentina
- Length : 9.2 mm
- Toledonia elata J. Thiele, 1912
- Distribution : Antarctica
- Toledonia limmaeaeformis Smith, 1877
- Distribution : Antarctica
- Toledonia limnaeoides N.H.J. Odhner, 1913
- Distribution : West Greenland
- Length : 2.6 mm
- Toledonia major C. Hedley, 1911
- Distribution : Subantarctic, South Sandwich Islands, South Shetlands; Antarctic Peninsula
- Length : 6.6 mm
- Description : found at depths up to 200 m
- Toledonia palmeri Dell R.K., 1990
- Distribution : Antarctic
- Length : 2.6 mm
- Toledonia parelata Dell R.K., 1990
- Distribution : Tierra del Fuego
- Length : 6.1 mm
- Description : found at depths between 80 m and 230 m
- Toledonia perplexa Dall, 1902
- Distribution : Argentina; Tierra del Fuego; Straits of Magellan; Falklands
- Length : 3.2 mm
- Description : found to depths of 230 m
- Toledonia punctata J. Thiele, 1912
- Distribution : Subantarctic, Tierra del Fuego; South Georgia; Kerguelen
- Length : 6 mm
- Description : found at depths between 115 m and 567 m
- Toledonia striata J. Thiele, 1912
- Distribution :Antarctica
- Toledonia succineaformis A. W. B. Powell, 1955
- Distribution : New Zealand
- Toledonia vagabunda J. Mabille,
- Distribution : Tierra del Fuego
- Length : 10 mm
- Toledonia bullata A.A. Gould, 1847
- Genus Bogasonia Warén, 1989
- Bogasonia gorjachevi Chaban, 1998
- Distribution : Kurile Islands
- Bogasonia volutoides Warén, 1989
- Distribution : Iceland
- Description : found at depths between 100-200 m
- Bogasonia gorjachevi Chaban, 1998
Family Notodiaphanidae
Thiele, 1931 (incertae sedis)The shell resembles the shell of the genus Haminaea.
- Genus Notodiaphana Thiele, 1917
- Notodiaphana fragilis Vélain, 1877
- Distribution : Indian Ocean.
- Notodiaphana fragilis Vélain, 1877
External links and references
- Bois-Reymond Marcus, E. D. (1976): A taxonomic survey of the genus Toledonia Dall, 1902 (Opistobranchia, Diaphanidae). Zool. Scripta 5: 25-33
- Photo of Colpodaspis thompsoni (http://www.rfbolland.com/okislugs/colpthom.html)