The Eastern forktail (Ischnura verticalis) is a small species of damselfly found in North America. It is known for its distinctive forked tail, which is blue in males and black in females. These damselflies are commonly found near streams, rivers, and ponds, where they lay their eggs in emergent vegetation. They feed on small insects and are known to be very agile flyers. The Eastern forktail is a beautiful and important part of aquatic ecosystems, as they help control populations of mosquitoes and other insects.