Icerya
Icerya purchasi, female
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hemiptera
Suborder: Sternorrhyncha
Family: Monophlebidae
Genus: Icerya
Signoret, 1875
Species

See text

Icerya is a genus of scale insects in the family Monophlebidae. It is named after physician-naturalist Dr. Edmond Icery of British Mauritius.[1]

Hermaphroditism

Hermaphroditism 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.[2] The existence of both hermaphrodites and males in a species is known as androdioecy. 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.[3]

List of species

  • Icerya aegyptiaca (Douglas 1890).
  • Icerya albolutea Cockerell 1898.
  • Icerya bimaculata De Lotto 1959.
  • Icerya brachystegiae Hall 1940.
  • Icerya brasiliensis Hempel 1920.
  • Icerya callitri (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 Cockerell 1897.
  • Icerya purchasi maskelli Cockerell 1897.
  • Icerya purchasi 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 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

  1. ↑ Sorensen, W. Conner; Smith, Edward H. (2019). "Vedalia the "Wonder Beetle" and Biological Control". Charles Valentine Riley: Founder of Modern Entomology. And Janet R. Smith, with Donald C. Weber. Tuscaloosa: University of Alabama Press. p. 221. ISBN 9780817392222.
  2. ↑ Normark, Benjamin B. (2003). "The Evolution of Alternative Genetic Systems in Insects". Annual Review of Entomology. 48 (1): 397–423. doi:10.1146/annurev.ento.48.091801.112703. ISSN 0066-4170.
  3. ↑ The Insects An outline of Entomology, Gullan & Cranston, Wiley-Blackwell 2001


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