WildSnapField Guide
Insects

Eastern Forktail

Ischnura verticalis

Photograph of Eastern Forktail (Ischnura verticalis)
Photo: (c) Mark Rosenstein, some rights reserved (CC BY-NC), uploaded by Mark Rosenstein (CC-BY-NC) · source

What it is

Eastern forktail (Ischnura verticalis) is a member of the damselfly family Coenagrionidae.

Where and when to find it

Habitat
You can find them near almost any still or slow-moving water, like ponds, marshes, and ditches throughout the eastern US.
How to find it
Look closely at reeds and grass blades near water. They are small and often perch horizontally, but the males' bright blue tails can be striking.
Best time of day
Sunny days, from late spring to early fall.

How it lives

What it eats
Mosquitoes, gnats, small flies, and other tiny insects.
What eats it
Birds, frogs, fish, larger dragonflies.

Worth knowing

  • Damselflies are thinner and hold their wings over their backs when resting, unlike dragonflies.
  • Males are bright blue, while females can be green, orange, or black.
  • Their babies, called nymphs, live in the water for many months before becoming adults.
  • They have huge eyes that help them see in almost every direction.
  • They can fly backward and hover in place.
  • If you look closely, you might see them 'skimming' the water to lay eggs.

Why it matters

Eastern Forktails eat many small insects, helping to control mosquito populations. They are also a food source for fish and birds.

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