Butterflies and Moths of North America

collecting and sharing data about Lepidoptera

Ilavia Hairstreak
Satyrium ilavia (Beutenmüller, 1899)


Family: Lycaenidae
Subfamily: Theclinae
Identification: Two tails on each hindwing. Underside of hindwing pale brown-tan; blue tail-spot capped narrowly with orange usually reduced or absent; white-edged black W near inner margin faint or absent.
Wing Span: 7/8 - 1 1/16 inches (2.2 - 2.8 cm).
Life History: Eggs are laid singly on host plant twigs and hatch the following spring. Caterpillars feed on leaves, buds, and male catkins
Flight: One flight from March-June.
Caterpillar Hosts: Scrub oak..
Adult Food: Flower nectar.
Habitat: Oak brush sometimes mixed with junipers, cactus, and other plants.
Range: Central and southeastern Arizona.
Conservation: Not usually required.
NCGR: G4, G5 - Demonstrably secure globally, though it may be quite rare in parts of its range, especially at the periphery.
Management Needs: None reported.
Comments: NULL
Get your BAMONA Gear!

Hoodies and t-shirts in two designs!


Advertise with us!

Do you have a product or service that you think would interest BAMONA users? If you would like to advertise on this website, contact us by email, or use the contact form and select the "Advertising" category.