Chalkhill Blue

Chalkhill Blue
Chalkhill Blue
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Lepidoptera
Family: Lycaenidae
Tribe: Polyommatini
Genus: Polyommatus
Species: P. coridon
Binomial name
Polyommatus coridon
(Poda, 1761)

The Chalkhill Blue (Polyommatus coridon) is a butterfly in the family Lycaenidae.

Males have pale silvery-blue wings with black and white border (see adjacent images). Females are dark brown, also with the black and white borders. As with many blue butterflies, separation from similar species in the field is on the underside markings.

In the UK, this is a species favouring unimproved (and unfertilized) chalk downland. Its larval (caterpillar) foodplant is Horseshoe Vetch (Hippocrepis comosa). It is usually seen on the wing for about 6-8 weeks, July to September.

Photographs of a habitat of the Chalkhill Blue can be found on the following web page:

http://www.glaucus.org.uk/MillHill2005.html


References

  • Butterfly Conservation (undated) Butterfly species data: Chalkhill Blue. [1] (Accessed 2 Nov 2006)
  • Emmet, A.M. (1990) Lysandra coridon (Poda). Pages 160-162 in The Moths and Butterflies of Great Britain and Ireland Vol. 7 Part 1 (ed. A.M. Emmet and J. Heath). Harley Books, Colchester, UK.
  • Tomlinson, D. and R. Still (2002) Britain's Butterflies. WildGuides, Old Basing, UK.

See also