North American Ecology (US and Canada)
occurs (regularly, as a native taxon) in multiple nations
Regularity: Regularly occurring
Type of Residency: Year-round
Global Range: (>2,500,000 square km (greater than 1,000,000 square miles)) Southern California east through Nevada and Utah to New Mexico; Texas, Alabama, Georgia, and Florida. Not in Louisiana or Mississippi.
Comments: Fields, scrub, roadsides, foothills, deserts. Hosts in fam. Fabaceae, incl. genera Astragalus, Prosopis, Phaseolus.
Non-Migrant: No. All populations of this species make significant seasonal migrations.
Locally Migrant: No. No populations of this species make local extended movements (generally less than 200 km) at particular times of the year (e.g., to breeding or wintering grounds, to hibernation sites).
Locally Migrant: No. No populations of this species make annual migrations of over 200 km.
Number of Occurrences
Note: For many non-migratory species, occurrences are roughly equivalent to populations.
Estimated Number of Occurrences: 81 to >300
10,000 to >1,000,000 individuals
Life History and Behavior
Molecular Biology and Genetics
Statistics of barcoding coverage: Hemiargus hanno ceraunus
Public Records: 0
Specimens with Barcodes: 5
Species With Barcodes: 1
Barcode data: Hemiargus ceraunus
No available public DNA sequences.
Download FASTA File
Statistics of barcoding coverage: Hemiargus ceraunus
Public Records: 1
Specimens with Barcodes: 28
Species With Barcodes: 1
National NatureServe Conservation Status
Rounded National Status Rank: N5 - Secure
NatureServe Conservation Status
Rounded Global Status Rank: G5 - Secure
Reasons: Widespread in Neotropics and southern U.S.
Degree of Threat: D : Unthreatened throughout its range, communities may be threatened in minor portions of the range or degree of variation falls within natural variation
Global Protection: Many to very many (13 to >40) occurrences appropriately protected and managed
Hemiargus ceraunus, the Ceraunus Blue, is a butterfly in the Lycaenidae family. It is found in the south-western United States, southern Texas, Florida and the Florida Keys south through the West Indies, Mexico and Central America to South America. Strays may be found in North Carolina, Missouri, Kansas and Nevada. The habitat consists of open woodland, desert scrub, dunes, pastures, road edges and vacant lots.
The wingspan is 20–30 mm. The upperside of the males is light blue with a darker narrow border. Female are dark brown, often with blue wing bases. The underside is grey. Both wings have a row of dark postmedian dashes on the underside. Adults are on wing year round in Texas and southern Florida and in late summer in other parts of the range. Adults feed on flower nectar.
- Hemiargus ceraunus antibubastus Hübner,  (Florida)
- Hemiargus ceraunus astenidas (Lucas, 1857) (Mexico, Costa Rica)
- Hemiargus ceraunus gyas (Edwards, 1871) (Arizona, California)
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