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Butterflies of Mexico, USA & Canada
Western Pygmy-Blue
Brephidium exilis  BOISDUVAL, 1852
Family - LYCAENIDAE
subfamily - POLYOMMATINAE
Tribe -
subtribe -
Brephidium exilis, Arizona, USA   Tony Hoare
Introduction
The genus Brephidium comprises of two species - pseudofea and exilis. They are very similar in appearance, but the markings on the undersides differ slightly. Additionally, males of exilis usually exhibit a slight violet-blue iridescence extending across the basal area of the upperside, which is lacking in pseudofea.
Brephidium exilis is found in California, Arizona, Yucatan, Cuba, Hispaniola, Jamaica, the Bahamas and the Cayman Islands; whereas pseudofea is found only in Florida and South Carolina.
Habitats
This species is found in scrubby grassland and semi-desert habitats at altitudes between 0-500m.
Lifecycle
The pale green eggs are laid singly on the upperside of leaves of Salsola ( Amaranthaceae ) and on Sesuvium and Trianthema ( Azioaceae ). The caterpillar is pale green and rough-textured, matching the stems and leaves of the foodplants. It is attended by ants which milk it for sugary secretions.
Adult behaviour
Western Pygmy Blues are active only in hot sunshine, at which time they will nectar avidly at any available flower.

 

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