Erynnis zarucco, Zarucco Duskywing
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Adult male - see hindwing fringe
Description: 15-19 mm. This is a medium sized skipper that is variable in its patterns. It is brown in color with small white spots on forewings. Fresh males have a pale hindwing fringe. Adults perch with their wings outspread.
Habitat and Distribution: This species is uncommon in the Keys. It can be found in the lower Keys in all months of the year along weedy fields and roadsides where its host plant grows. Adults enjoy visiting bidens alba for nectar
Host Plant: Sesbania macrocarpa
Natural History: It is suspected that E. zarucco in the Southern Keys is more closely related to the population in Cuba rather than that of the Florida mainland.