''Ibla'' is a genus of

barnacle A barnacle is a type of arthropod constituting the subclass Cirripedia in the subphylum Crustacea, and is hence related to crabs and lobsters. Barnacles are exclusively marine, and tend to live in shallow and tidal waters, typically in erosive ...

. In 1848,

Charles Darwin Charles Robert Darwin ( ; 12 February 1809 – 19 April 1882) was an English natural history#Before 1900, naturalist, geologist, and biologist, widely known for his contributions to evolutionary biology. His proposition that all speci ...

studied the genus and found species with hermaphrodites and tiny males. In this genus the number

androdioecious Androdioecy is a reproductive system characterized by the coexistence of males and hermaphrodites. Androdioecy is rare in comparison with the other major reproductive systems: dioecy, gynodioecy and hermaphroditism. In animals, androdioecy has bee ...

species is uncertain because some authors use the words

female Female (symbol: ♀) is the sex of an organism that produces the large non-motile ova (egg cells), the type of gamete (sex cell) that fuses with the male gamete during sexual reproduction. A female has larger gametes than a male. Females a ...

and

hermaphrodite In reproductive biology, a hermaphrodite () is an organism that has both kinds of reproductive organs and can produce both gametes associated with male and female sexes. Many taxonomic groups of animals (mostly invertebrates) do not have ...

interchangeably.

Species

Species in this genus include: *'' Ibla cumingi'' *'' Ibla quadrivalvis'' *'' Ibla atlantica'' *''

Ibla sibogae Ragusa (; scn, Rausa ; la, Ragusia) is a city and '' comune'' in southern Italy. It is the capital of the province of Ragusa, on the island of Sicily, with 73,288 inhabitants in 2016. It is built on a wide limestone hill between two deep v ...

'' *'' Ibla pygmaea'' *'' Ibla idiotica'' *''

Ibla cuvieriana Ragusa (; scn, Rausa ; la, Ragusia) is a city and '' comune'' in southern Italy. It is the capital of the province of Ragusa, on the island of Sicily, with 73,288 inhabitants in 2016. It is built on a wide limestone hill between two deep v ...

References

*Leach, M.D. (1825). XXIII. A tabular view of the Genera composing the Class Cirripedes, with Descriptions of the Species of Otion, Cineras, and Clyptra. ''The Zoological journal.'' 2: 208-215. page(s): 209 cited in WoRMS http://www.marinespecies.org/aphia.php?p=taxdetails&id=205861 *WoRMS (2021). Ibla Leach, 1825. Accessed at: http://marinespecies.org/aphia.php?p=taxdetails&id=205861 {{Taxonbar, from1=Q15896258, from2=Q21216255 Barnacles