Home / Gossamer-Winged (Lycaenidae) / El Segundo Blue (Euphilotes battoides allyni)

El Segundo Blue (Euphilotes battoides allyni)

El Segundo Blue Butterfly
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The El Segundo Blue butterfly is indigenous to a limited area of the El Segundo dunes encompassing about 3200 acres of land, located in California’s Los Angeles County.

Description and Identification

Caterpillar

The larva or caterpillar goes through four instars prior to maturing into a pupa. When matured the larva is polymorphic, differing in color, from pure white to dull yellow.  Some may even have a dull red or maroon body marked with white or yellow dashes.

Scientific Classification

Pupa

Not much details is available about the color and appearance of the pupa of these species, however, the pupa is formed at a leaf’s base and stays there for a while before developing into an adult.

Adult

Sexual Dimorphism: Present

Color and Appearance:  When the wings are opened, they are bright blue with black spots and an orange band. When the wings are closed the light bluish hue is present, with rows of black dots on both sides. While males have a dark blue tinge above, the females are mostly brown.

Average Wingspan: 20 to 25 mm ( 0.8 – 1 in)

Flight Pattern:Not much is known

El Segundo Blue
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Euphilotes Battoides Allyni
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Eggs

They are laid upon the coast buckwheat flowers and hatch between three and five days.

Quick Facts

DistributionLos Angeles county from Palos Verdes peninsula in the north up to Ballona wetlands; they have also been spotted in California’s Santa Barbara county
Lifespan Between 2 and 7 days
HabitatEl Segundos and dunes
Host plantsEriogonum parvifolium
Adult dietWild buckwheat

Did You Know

  • They have attained the designation of endangered species since and just three colonies of this species remain at present.
  • The El Segundo Blue Butterfly Reserve is situated adjacent to the LAX (Los Angeles International Airport for the purpose of preserving and protecting them.
  • In certain beach cities close to where it inhabits the growth of ice plant has been replaced by that of coast buckwheat for providing nectar to these butterflies.
Male El Segundo Blue Butterfly
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Female El Segundo Blue Butterfly
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El Segundo Blue Butterfly Habitat
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El Segundo Blue Butterfly Images
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El Segundo Blue Butterflies
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Blue Butterfly El Segundo
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