''Dizoniopsis apexclarus'' is a species of

sea snail Sea snails are slow-moving marine (ocean), marine gastropod Mollusca, molluscs, usually with visible external shells, such as whelk or abalone. They share the Taxonomic classification, taxonomic class Gastropoda with slugs, which are distinguishe ...

in the family

Cerithiopsidae Cerithiopsidae is a family of very small sea snails in the informal group Ptenoglossa. Members of this family are known as cerithiopsids.MolluscaBase eds. (2020). MolluscaBase. Cerithiopsidae H. Adams & A. Adams, 1853. Accessed through: World Re ...

native to the islands

São Tomé São Tomé is the capital and largest city of the Central African island country of São Tomé and Príncipe. Its name is Portuguese for " Saint Thomas". Founded in the 15th century, it is one of Africa's oldest colonial cities. History Álv ...

Príncipe Príncipe (; ) is the smaller, northern major island of the country of São Tomé and Príncipe lying off the west coast of Africa in the Gulf of Guinea. It has an area of (including offshore islets) and a population of 7,324 at the 2012 Cens ...

and

Annobón Annobón (; ) is a province of Equatorial Guinea. The province consists of the island of Annobón and its associated islets in the Gulf of Guinea. Annobón is the smallest province of Equatorial Guinea in both area and population. According t ...

. It was described by Emilio Rolán, in 2007.Rolán E. (2007). A new species of Dizoniopsis (Prosobranchia, Cerithiopsidae) from the Gulf of Guinea Islands. Iberus 25(1): 33-36

References

Cerithiopsidae Gastropods described in 2007 {{Cerithiopsidae-stub