''Icerya'' is a genus of
scale insect
Scale insects are small insects of the order Hemiptera, suborder Sternorrhyncha. Of dramatically variable appearance and extreme sexual dimorphism, they comprise the infraorder Coccomorpha which is considered a more convenient grouping than the ...
s in the family
Monophlebidae
Monophlebidae is a family of scale insects commonly known as the giant scales or monophlebids. They occur in most parts of the world but more genera are found in the tropics than elsewhere.[British Mauritius
Mauritius was a Crown colony off the Southeast coast of Africa. Formerly part of the French colonial empire, British rule in Mauritius was established de facto with the Invasion of Isle de France in November 1810, and de jure by the subsequent T ...]
.
Hermaphroditism
Hermaphroditism
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 separ ...
is extremely rare in the insect world despite the comparatively common nature of this condition in the crustaceans. Several species of ''Icerya'', including the pestiferous cottony-cushion scale, ''I. purchasi'', are known to be hermaphrodites that reproduce by self-fertilising. Occasionally males are produced from unfertilised eggs, but generally individuals are monoecious with a female-like nature but possessing an ovotestis (a part-testis, part-ovary organ) and sperm is transmitted ovarially from the female to her young. This hermaphroditic sexual self-sufficiency, where a single individual can populate new territory, has contributed to the invasive spread of the cottony-cushion scale insect away from its native Australia.
[The Insects An outline of Entomology, Gullan & Cranston, Wiley-Blackwell 2001]
List of species
* ''
Icerya aegyptiaca'' (Douglas 1890).
* ''
Icerya albolutea'' Cockerell 1898.
* ''
Icerya bimaculata'' De Lotto 1959.
* ''
Icerya brachystegiae
''Icerya'' is a genus of scale insects in the family Monophlebidae. It is named after physician-naturalist Dr. Edmond Icery of British Mauritius.
Hermaphroditism
Hermaphroditism is extremely rare in the insect world despite the comparatively com ...
'' Hall 1940.
* ''
Icerya brasiliensis'' Hempel 1920.
* ''
Icerya callitri
''Icerya'' is a genus of scale insects in the family Monophlebidae. It is named after physician-naturalist Dr. Edmond Icery of British Mauritius.
Hermaphroditism
Hermaphroditism is extremely rare in the insect world despite the comparatively com ...
'' (Froggatt 1921).
* ''
Icerya chilensis'' Hempel 1920.
* ''
Icerya colimensis'' Cockerell 1902.
* ''
Icerya flava'' Hempel 1920.
* ''
Icerya flocculosa'' Hempel 1932.
* ''
Icerya formicarum'' Newstead 1897.
* ''
Icerya genistae'' Hempel 1912.
* ''
Icerya hanoiensis'' Jashenko & Danzig 1992.
* ''
Icerya imperatae'' Rao 1951.
* ''
Icerya insulans'' Hempel 1923.
* ''
Icerya koebelei'' Maskell 1892.
* ''
Icerya leuderwaldti'' Hempel 1918.
* ''
Icerya littoralis mimosae'' Cockerell 1902.
* ''
Icerya littoralis tonilensis'' Cockerell 1902.
* ''
Icerya littoralis'' Cockerell 1898.
* ''
Icerya longisetosa'' Newstead 1911.
* ''
Icerya maxima'' Newstead 1915.
* ''
Icerya maynei'' Vayssiere 1926.
* ''
Icerya menoni'' Rao 1951.
* ''
Icerya minima'' Morrison 1919.
* ''
Icerya minor'' Green 1908.
* ''
Icerya montserratensis'' Riley & Howard 1890.
* ''
Icerya morrisoni'' Rao 1951.
* ''
Icerya nigroareolata'' Newstead 1917.
* ''
Icerya palmeri'' Riley & Howard 1890.
* ''
Icerya paulista'' Hempel 1920.
* ''
Icerya pilosa'' Green 1896.
* ''
Icerya pulchra'' (Leonardi 1907).
* ''
Icerya purchasi citriperda'' Hempel 1920.
* ''
Icerya purchasi crawii
''Icerya'' is a genus of scale insects in the family Monophlebidae. It is named after physician-naturalist Dr. Edmond Icery of British Mauritius.
Hermaphroditism
Hermaphroditism is extremely rare in the insect world despite the comparatively c ...
'' Cockerell 1897.
* ''
Icerya purchasi maskelli'' Cockerell 1897.
* ''
Icerya purchasi
''Icerya purchasi'' ( common name: cottony cushion scale) is a scale insect that feeds on more than 80 families of woody plants, most notably on ''Citrus'' and ''Pittosporum''. Originally described in 1878 from specimens collected in New Zealand ...
'' Maskell 1878 - cottony cushion scale
* ''
Icerya rileyi'' Cockerell 1896.
* ''
Icerya schoutedeni'' Vayssiere 1926.
* ''
Icerya schrottkyi'' Hempel 1900.
* ''
Icerya seychellarum (type)'' (Westwood 1855).
* ''
Icerya seychellarum cristata'' Newstead 1909.
* ''
Icerya similis'' Morrison 1923.
* ''
Icerya splendida'' Lindinger 1913.
* ''
Icerya subandina
''Icerya'' is a genus of scale insects in the family Monophlebidae. It is named after physician-naturalist Dr. Edmond Icery of British Mauritius.
Hermaphroditism
Hermaphroditism is extremely rare in the insect world despite the comparatively com ...
'' Leonardi 1911.
* ''
Icerya sulfurea pattersoni'' Newstead 1917.
* ''
Icerya sulfurea'' Lindinger 1913.
* ''
Icerya sumatrana'' Rao 1951.
* ''
Icerya taunayi'' Hempel 1920.
* ''
Icerya travancorensis'' Rao 1951.
* ''
Icerya tremae'' Vayssiere 1926.
* ''
Icerya zeteki'' Cockerell 1914.
* ''
Icerya zimmermani'' Green 1932.
References
Monophlebidae
Sternorrhyncha genera
{{Coccoidea-stub