Colias

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Clouded yellows
File:Clouded yellow (Colias croceus).jpg
Clouded yellow on the Northern slopes of Mount Etna, Sicily
Scientific classification
Kingdom:
Animalia
Phylum:
Arthropoda
Class:
Insecta
Order:
Lepidoptera
Family:
Pieridae
Tribe:
Coliadini
Genus:
Colias

Fabricius, 1807
Type species
Papilio hyale
Synonyms
  • Eurymus Horsfield, [1829]
  • Ganura Zetterstedt, [1839]
  • Scalidoneura Butler, 1871
  • Eriocolias Watson, 1895
  • Coliastes Hemming, 1931
  • Protocolias Petersen, 1963 [2]
  • Mesocolias Petersen, 1963
  • Neocolias Berger, 1986 [3]
  • Palaeocolias Berger, 1986
  • Eucolias Berger, 1986
  • Similicolias Berger, 1986
  • Paracolias Berger, 1986

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Colias is a genus of butterflies in the family Pieridae. They are usually called clouded yellows; the North American name "sulphurs" is elsewhere used for Coliadinae in general. The closest living relative is the genus Zerene,[4] which is sometimes included in Colias.

File:BH015 Colias.jpg
Wing venation

This genus occurs throughout the Holarctic, including the arctic regions. They are also found in South America, Africa, China and India. Their caterpillars feed on certain Fabaceae, for example vetches (Vicia). While most are thus beneficial by keeping weeds at bay, some occasionally become nuisance pests on crops like alfalfa. In some species, the wings of males have brilliant ultraviolet reflection, while those of females do not.[5][6] Adults of both sexes have various colour forms.

Most if not all species of this genus, as usual for Coliadinae, do not sequester toxins or other noxious compounds from their food plants. They are therefore a well-loved prey item of insectivores as compared to Pieris of the related Pierinae. They make up this disadvantage by being more nimble and better able to evade attacks by would-be predators.[7]

Notable lepidopterologists who did many studies on this genus included Julius Röber, J. Malcolm Fawcett, George B. Johnson, and Henry Rowland-Brown.

Systematics

Hybridization runs rampant in these polytypic and clinal[8] butterflies, confounding molecular phylogenetics studies. In general, cladistic analyses of only one type of data (particularly mtDNA sequences) cannot be considered reliable. Regardless, the evolutionary distance within some "species" is so large that cryptic speciation rather than (or in addition to) interbreeding seems to be the cause. For example, the Beringian populations traditionally assigned to the Northern Clouded Yellow (C. hecla) could warrant recognition as a species; hybridization between North American and Asian populations seems to have played a role in their evolution, but as a whole they appear to be a rather old and distinct lineage.[9]

File:Colias phicomone - Alpen-Gelbling 01 (HS).JPG
Mountain Clouded Yellow (C. phicomone)

Species

Listed alphabetically.[10]

File:Colias myrmidone, orig. figure from Esper, -1777-, pl. 65.jpeg
Danube Clouded Yellow (C. myrmidone).
Left = upperside pattern
Right = underside pattern.

Distinguishing characteristics

Colias are usually some shade of yellow, orange, or white. Their upper sides feature black borders (usually solid in males, often with pale spots in females). They always perch with wings closed, but upper side pattern may be seen faintly through the wing, or glimpsed in flight.[11]

Gallery

References

  1. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  2. ↑ Bjorn Petersen, 1963. The male genitalia of some Colias species.Journal of Research on the Lepidoptera 1: 135-156.[1]
  3. ↑ Lucien A Berger, 1986 Systématique du genre Colias F : Lepidoptera-Pieridae Bruxelles : Imprimerie des Sciences, 1986.
  4. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  5. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  6. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  7. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  8. ↑ Paul C. Hammond, 1990 Patterns of geographic variation and evolution in polytypic butterflies Journal of Research on the Lepidoptera 29(1-2):54-76. [2]
  9. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  10. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  11. ↑ Brock, J.P. & Kaufman, K. Kaufman Field Guide to Butterflies of North America. Houghton Mifflin, 2003, p. 60.

Further reading

  • Vladimir Lukhtanov & Alexander G. Lukhtanov, 1994 Die Tagfalter Nordwestasiens: (Lepidoptera, Diurna) V. Eitschberger ISBN 9783923807024
  • Joseph T. Verhulst (English translation R. Leestmans, editing E. Benton and R. Leestmans), 2000 Les Colias du Globe translation Monograph of the genus Colias Keltern, Germany : Goecke & Evers ISBN 9783931374150
  • Glassberg, Jeffrey Butterflies through Binoculars, The West (2001)
  • Guppy, Crispin S. and Shepard, Jon H. Butterflies of British Columbia (2001)
  • James, David G. and Nunnallee, David Life Histories of Cascadia Butterflies (2011)
  • Pelham, Jonathan Catalogue of the Butterflies of the United States and Canada (2008)
  • Pyle, Robert Michael The Butterflies of Cascadia (2002)
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External links

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