Black Longwing - _TNY_6628
This rather tall butterfly is a sara longwing (Heliconius sara). Their larvae feed on passion flower vines and have evolved through a literal arms race with the plants to be able to feed on those. Like the plants became poisonous - and the caterpillars manage to not be affected and instead store the poison, becoming poisonous themselves.
This one was photographed at the Haga Ocean butterlfy house in Solna, Sweden.
Black Longwing - _TNY_6628
This rather tall butterfly is a sara longwing (Heliconius sara). Their larvae feed on passion flower vines and have evolved through a literal arms race with the plants to be able to feed on those. Like the plants became poisonous - and the caterpillars manage to not be affected and instead store the poison, becoming poisonous themselves.
This one was photographed at the Haga Ocean butterlfy house in Solna, Sweden.