After chatting with Ashwin, Lychas more likely because of double sting at tail
"Borboletinha-estaladora-azul (Hemiargus hanno) fotografado no estado do EspÃrito Santo - Sudeste do Brasil. Bioma Mata Atlântica. Registro feito em 2004.
ENGLISH: Butterfly photographed in EspÃrito Santo state- Southeast of Brazil. Atlantic Forest Biome. Picture made in 2004."