False-head
Guides
Callophrys xami
Xami Hairstreak, Green Hairstreak, Elfin
Callophrys xami is a small lycaenid butterfly with a wingspan of 2.38–2.86 cm, recognized by the distinctive W-shaped postmedian white line on its yellowish-green hindwing underside. Males defend territories for mating, and the species exhibits complex sexual behavior involving a 'false head' wing pattern that deflects predator attacks. The butterfly is associated with Crassulaceae host plants, particularly Echeveria and Sedum species.