Icerya

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Icerya
Icerya-purchasi.jpg
Icerya purchasi , female
Scientific classification e
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, Icerya purchasi, are known to be hermaphrodites that reproduce by self-fertilising. Occasionally reproductively functioning males are produced from unfertilised eggs but generally individuals are monoecious and with a female-like nature but possessing an ovotestis which is part testis part ovary and sperm is transmitted ovarially from the female to her young.[2] 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[]

  • (Douglas 1890).
  • Cockerell 1898.
  • De Lotto 1959.
  • Hall 1940.
  • Hempel 1920.
  • (Froggatt 1921).
  • Hempel 1920.
  • Cockerell 1902.
  • Hempel 1920.
  • Hempel 1932.
  • Newstead 1897.
  • Hempel 1912.
  • Jashenko & Danzig 1992.
  • Rao 1951.
  • Hempel 1923.
  • Maskell 1892.
  • Hempel 1918.
  • Cockerell 1902.
  • Cockerell 1902.
  • Cockerell 1898.
  • Newstead 1911.
  • Newstead 1915.
  • Vayssiere 1926.
  • Rao 1951.
  • Morrison 1919.
  • Green 1908.
  • Riley & Howard 1890.
  • Rao 1951.
  • Newstead 1917.
  • Riley & Howard 1890.
  • Hempel 1920.
  • Green 1896.
  • (Leonardi 1907).
  • Hempel 1920.
  • Cockerell 1897.
  • Cockerell 1897.
  • Icerya purchasi Maskell 1878 - cottony cushion scale
  • Cockerell 1896.
  • Vayssiere 1926.
  • Hempel 1900.
  • (Westwood 1855).
  • Newstead 1909.
  • Morrison 1923.
  • Lindinger 1913.
  • Leonardi 1911.
  • Newstead 1917.
  • Lindinger 1913.
  • Rao 1951.
  • Hempel 1920.
  • Rao 1951.
  • Vayssiere 1926.
  • Cockerell 1914.
  • 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. ^ THE EVOLUTION OF ALTERNATIVE GENETIC SYSTEMS IN INSECTS.
  3. ^ The Insects An outline of Entomology, Gullan & Cranston, Wiley-Blackwell 2001


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