North American Butterflies and Moths List

The definitive website on wildbirds & nature

The Registry of Nature Habitats

U.S. Geological Survey

Butterflies of North America

Butterflies of Northern Mexico

Strophius Hairstreak (Allosmaitia strophius)

Strophius Hairstreak (Allosmaitia strophius)

Wing span: 7/8 - 1 1/4 inches (2.2 - 3.2 cm).

Identification: Upperside of male forewing with blue only at inner margin; hindwing blue with scent patch at base. Female gray above, pale brown below.

Life history: Not reported.

Flight: All year in Central America; Texas stray was reported in November.

Caterpillar hosts: Flowers of plants in the Malpighia family.

Adult food: Not reported.

Habitat: Dry and wet subtropical forests and scrub.

Range: Southern Brazil north to Sinaloa, Mexico. One stray recorded in Texas.

The Nature Conservancy Global Rank: G4 - Apparently secure globally, though it might be quite rare in parts of its range, especially at the periphery.

Conservation: Not necessary for rare stray.

Management needs: None reported.


Opler, P. A. and V. Malikul. 1992. A field guide to eastern  butterflies. Peterson 
    field guide #4. Houghton-Mifflin Co.,  Boston. 396 pages, 48 color plates.

Scott, J. A. 1986. The butterflies of North America. Stanford  University Press, 
    Stanford, Calif. 583 pages, 64 color plates.

Author: Jane M. Struttmann

State and Regional References:

Opler, Paul A. 1999. Peterson Field Guide to Western Butterflies, revised 
     edition. Houghton Mifflin Co., Boston, Mass.

Stanford, R.E. and P.A. Opler. 1993. Atlas of Western USA Butterflies. 
     Privately published, Denver, Colo.
Strophius Hairstreak (Allosmaitia strophius)
distribution map
map legend

Return to species list
Return to Butterflies of North America main page