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Hemiargus ceraunus gyas (W. H. Edwards, 1871)
(Ceraunus Blue)

Type Specimens
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Pinned Specimens
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Live Adults
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Immatures photo collection
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Immatures photo collection
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Larval Foodplants and Habitats
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Distribution and Larval Foodplants:

SW USA, NW Mexico

Larval Foodplants: Acacia constricta Benth., Marina parryi (Torr. & Gray) Barneby


(From: A Catalogue of the Butterflies of the United States and Canada, Jonathan P. Pelham)

Genus Hemiargus Hübner, 1818

Zutr. Samml. exot. Schmett. 1: 19. Type-species: Hemiargus antibubastus Hübner, 1818, Zutr. Samml. exot. Schmett. 1: pl. [18], figs. 99, 100; 19, no. 50 (= Hesperia ceraunus, Fabricius, 1793, Entomol. Syst. 3(1): 303, no. 149; subspecies), by designation of Hemming (1934), Gen. Names Holarct. Butts. 1: 104.


Hemiargus ceraunus (Fabricius, 1793)

Entomol. Syst. 3(1): 303, no. 149.

Original Combination: H[esperia]. R[urales]. Ceraunus

Type Locality: “America meridionalis Insulis”; defined as “Jamaica and Hispaniola” by W. Comstock and Huntington (1943), Ann. N. Y. Acad. Sci. 45(2): 107; stated to be “probably Jamaica” by Klots (1951), Field Guide Butts. N. Am.: 159; suggested to be “Jamaica or Hispaniola” by F. Brown (1972), in: F. Brown and Heineman, Jamaica Butts.: 252.

Types: Syntypes in ZMUC.

Lamas (2004g), Atl. Neotrop. Lepid. Chcklst. Part 4A: 139, placed ceraunus and all of its subspecies under Hemiargus hanno (Stoll, 1790), Aanhangs. Werk Uitl. Kapellen Pieter Cramer (3): 170, pl. 39, fig. 2 ♂ D, 2B ♂ V; 183 (index). This view was supported by W. Comstock and Huntington (1943), Ann. N. Y. Acad. Sci. 45(2): 106-107, N. Riley (1975), Field Guide Butts. W. Indies: 109, pl. 12, figs. 12a, 12b, F. Brown and Heineman (1972), Jamaica Butts.: 252-253, D. Smith et al. (1989), J. Lepid. Soc. 43(4): 282, and (1994), Butts. W. Indies & S. Florida: 128, but disputed by Wood (1924), Entomol. News 35(10): 359-361, Nabokov (1945), Psyche 52(1/2): 20, Scott (1986), Papilio (n.s.) 3: 7, and K. Johnson and Bálint (1995), Reps. Mus. Nat. Hist. Univ. Wisc. (Stevens Point) (54): 1-15. Schwartz (1989), Butts. Hispaniola: 262-266, reported H. hanno and H. ceraunus as widely sympatric on Hispaniola, but did not indicate how he separated them. Additional research is needed to resolve the issue.


Hemiargus ceraunus gyas (W. H. Edwards, 1871)

Trans. Am. Entomol. Soc. 3(3/4): 205, 210-211, no. 10.

Original Combination: Lycaena Gyas

Type Locality: “Arizona”; neotype from “Tucson, Pima Co., Arizona.”

Types: Neotype in CMNH, designated by F. Brown and Clench (1970), Trans. Am. Entomol. Soc. 96(3): 362, fig. 4 ♂ D&V.

                   =    astragala (W. G. Wright, 1905)

Butts. W. Coast: 64, no. 401; 232, no. 401, pl. 30, fig. 401 ♂ V (holotype).

Original Combination: [Lycaena] Astragala; Lycaena Astragala n. s.

Type Locality: “Southern California” “San Bernardino, Cal.” [San Bernardino County]

Types: Holotype (#4320) in CAS.

                   =    florencia (Clemence, 1914)

Entomol. News 25(1): 28.

Original Combination: Lycaena florencia

Type Locality: “Southern Arizona (Huachuca Mountains...)...Brawley, Imperial Valley, California...Yuma Arizona”

Types: Location of type(s) not known.



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