Calycopis isobeon

(Butler & Druce, 1872)

dusky-blue groundstreak

Calycopis isobeon, the dusky-blue groundstreak, is a small in the Lycaenidae. It ranges from Venezuela northward through Central America and Mexico to central Texas. The is extremely similar in appearance to the red-banded hairstreak (Calycopis cecrops), and the two are sometimes treated as due to their close morphological resemblance.

Calycopis isobeon by (c) John Rosford, some rights reserved (CC BY), uploaded by John Rosford. Used under a CC-BY license.GROUNDSTREAK, DUSKY-BLUE (Calycopis isobeon) (2-14-2015) national butterfly center, mission, hidalgo co, tx -01 (16594404372) by ALAN SCHMIERER. Used under a CC0 license.CalycopisIsobeonFUpUnACC1675 1676 by Accassidy. Used under a CC BY-SA 4.0 license.

Pronunciation

How to pronounce Calycopis isobeon: /ˌkælɪˈkoʊpɪs ˈɪsəˌbiːɒn/

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Identification

Distinguished from the very similar Calycopis cecrops (red-banded ) by subtle differences in wing pattern. The two are so similar that they are sometimes treated as . Upper wing surfaces are dark with metallic blue on the hindwings. Underside pattern details and the shape of the black marking within the orange spot at the hindwing margin may help separate the species, with C. isobeon having a more pointed, narrow black triangle in this position compared to the broader, blunter mark in C. cecrops, though variation exists.

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Distribution

Native to the Americas, ranging from Venezuela through Central America and Mexico to central Texas in the southern United States.

Similar Taxa

  • Calycopis cecropsExtremely similar in appearance; sometimes treated as . Distinguished by subtle differences in the shape of the black marking within the orange hindwing spot, with C. cecrops having a broader, blunter mark.
  • Calycopis origoAnother similar Calycopis that may be confused with C. isobeon; identification requires examination of wing pattern details.

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Sources and further reading