Ceraunus Blue
Hemiargus ceraunus (Fabricius, 1793)
Family: Lycaenidae
Subfamily: Polyommatinae
Identification: Upperside of male light blue with a darker narrow border; female dark brown, often with wing bases blue. Underside gray; both wings with a row of dark postmedian dashes. Florida butterflies have one submarginal eyespot on hindwing; Southwest butterflies have two.
Wing Span: 3/4 - 1 1/8 inches (2 - 3 cm).
Life History: Males patrol during warm hours of the day for receptive females. Eggs are laid singly on flower buds or leaves of host plant; caterpillars feed on flowers and seedpods.
Flight: Throughout the year in Texas and south Florida, late summer in other parts of its range.
Caterpillar Hosts: A variety of woody legumes including partridge pea (Cassia brachiata), mesquite (Prosopis species), and rosary pea (Abrus precatorius).
Adult Food: Flower nectar.
Habitat: Open woodland, desert scrub, dunes, pastures, road edges, and vacant lots.
Range: U. S. Southwest, South Texas, Florida and the Keys south through the West Indies, Mexico, and Central America to South America. Strays to North Carolina, Missouri, Kansas, and Nevada.
Conservation: Not usually required.
NCGR: G5 - Demonstrably secure globally, though it may be quite rare in parts of its range, especially at the periphery.
Management Needs: None reported.
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Verified Sightings
Displaying 313 - 336 of 874 verified sightings
Observation date: Apr 23, 2019
Submitted by: Bill Uttenweiler
Region: Brevard County, Florida, United States
Verified by: John Calhoun
Verified date: Apr 25, 2019
Observation date: Apr 15, 2019
Submitted by: Bill Uttenweiler
Region: Brevard County, Florida, United States
Verified by: John Calhoun
Verified date: Apr 19, 2019
Observation date: Dec 30, 2018
Submitted by: GPete
Region: Brevard County, Florida, United States
Verified by: John Calhoun
Verified date: Apr 11, 2019
Observation date: Mar 24, 2019
Submitted by: Lil'Enthusiast
Region: Brevard County, Florida, United States
Verified by: John Calhoun
Verified date: Mar 26, 2019
Observation date: Mar 23, 2019
Submitted by: Bill Uttenweiler
Region: Brevard County, Florida, United States
Verified by: John Calhoun
Verified date: Mar 24, 2019
Observation date: Mar 24, 2019
Submitted by: natvisions
Region: Volusia County, Florida, United States
Verified by: John Calhoun
Verified date: Mar 24, 2019
Observation date: Mar 19, 2019
Submitted by: MAKI
Region: Riverside County, California, United States
Verified by: Ken Davenport
Verified date: Mar 20, 2019
Observation date: Feb 22, 2019
Submitted by: Bill Uttenweiler
Region: Brevard County, Florida, United States
Verified by: John Calhoun
Verified date: Feb 23, 2019
Observation date: Jan 23, 2019
Submitted by: suedavies28
Region: Orange County, Florida, United States
Verified by: John Calhoun
Verified date: Jan 26, 2019
Observation date: Jan 05, 2019
Submitted by: Bill Uttenweiler
Region: Brevard County, Florida, United States
Verified by: John Calhoun
Verified date: Jan 06, 2019
Observation date: Dec 16, 2018
Submitted by: Bill Uttenweiler
Region: Brevard County, Florida, United States
Verified by: John Calhoun
Verified date: Dec 19, 2018
Observation date: Nov 30, 2018
Submitted by: PamK
Region: Sarasota County, Florida, United States
Verified by: John Calhoun
Verified date: Dec 09, 2018
Observation date: Dec 04, 2018
Submitted by: Englishman
Region: Pinellas County, Florida, United States
Verified by: John Calhoun
Verified date: Dec 07, 2018
Observation date: Nov 04, 2018
Submitted by: hiker96
Region: Hidalgo County, Texas, United States
Verified by: stomlins701
Verified date: Nov 29, 2018
Observation date: Nov 06, 2018
Submitted by: Jeff Trahan
Region: Hidalgo County, Texas, United States
Verified by: stomlins701
Verified date: Nov 26, 2018
Observation date: Aug 24, 2016
Submitted by: Dennis Forsythe
Region: Charleston County, South Carolina, United States
Verified by: Dennis Forsythe
Verified date: Nov 25, 2018
Observation date: Nov 17, 2018
Submitted by: Bill Uttenweiler
Region: Brevard County, Florida, United States
Verified by: John Calhoun
Verified date: Nov 20, 2018
Observation date: Nov 07, 2018
Submitted by: Darrin Frye
Region: Brevard County, Florida, United States
Verified by: John Calhoun
Verified date: Nov 10, 2018
Observation date: Nov 06, 2018
Submitted by: Bill Uttenweiler
Region: Brevard County, Florida, United States
Verified by: John Calhoun
Verified date: Nov 08, 2018
Observation date: Nov 01, 2018
Submitted by: Englishman
Region: Alachua County, Florida, United States
Verified by: John Calhoun
Verified date: Nov 02, 2018
Observation date: Oct 30, 2018
Submitted by: Bill Uttenweiler
Region: Brevard County, Florida, United States
Verified by: John Calhoun
Verified date: Oct 31, 2018
Observation date: Sep 14, 2013
Submitted by: Dennis Forsythe
Region: Calhoun County, South Carolina, United States
Verified by: Dennis Forsythe
Verified date: Oct 27, 2018
Observation date: Oct 22, 2014
Submitted by: Dennis Forsythe
Region: Charleston County, South Carolina, United States
Verified by: Dennis Forsythe
Verified date: Oct 27, 2018
Observation date: Aug 25, 2016
Submitted by: Dennis Forsythe
Region: Charleston County, South Carolina, United States
Verified by: Dennis Forsythe
Verified date: Oct 27, 2018
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