More
Archive
2017
2016
2015
 

Feeding Habits of Daring Dragonflies

Dragonflies – while the origin of their name is a mystery, it is an appropriate description of these voracious predators. Both the aquatic nymphs and the flying adults are some of the largest and most aggressive insect hunters in the world.

Dragonfly nymphs live in the water and usually hang out on aquatic vegetation waiting for their prey, which is virtually any animal small enough to grab. When prey gets close enough, the nymph unfurls its labium (mouthpart that shoots out past the head) to capture its prey. Larger dragonfly nymphs may even eat minnows or tadpoles. 

Eastern pondhawk male erythemis simplicicollis 405 

Eastern Pondhawk male (Erythemis simplicicollis) 

Adult dragonflies will also eat any insect they can catch. While they usually eat mosquitoes and midges, they’ll also eat butterflies, moths, bees, flies and even other dragonflies. Larger dragonflies will eat their own body weight in insect prey every day.

blue dasher Jeff Smith 405 

Blue dasher (Pachydiplax longipennis) ©JeffSmith 

They are extremely agile and catch their prey midair. Most dragonflies fly an average of 10 miles per hour, but large species can top out at 30 miles per hour. They are able to fly backwards, hover in place, turn in tight spots, and accelerate instantly. Dragonflies can create a type of basket with their legs to scoop up a bug and put it in their mouth without stopping. Other dragonflies simply open their mouths to catch food as they fly. Yet other dragonflies glean their food, which means they catch the insects that perch above plant stems and leaves. Immature adults will eat caterpillars hanging from trees.

Eastern pondhawk female Erythemis simplicicollis 405 

Eastern Pondhawk female (erythemis simplicicollis) 

Many cultures have historically revered dragonflies. In Japan, the dragonfly symbolizes focused endeavor and vigilance because of its manner of moving up, down and sideways while continuing to face forward; Samurai warriors fashioned helmets in the shape of dragonflies, which were symbols of invincibility. To some Native American tribes, dragonflies symbolized spring and good harvests.

You can identify dragonflies and damselflies common to DuPage County using this handy guide. You can also download the Dragonfly ID app.

Twelve spotted skimmer male (libellula pulchella)

Winter Biking in the Preserves
Published 12/27/2016
Forest Faves: Waterfall Glen
Published 12/20/2016
Forest Faves: St. James Farm
Published 11/30/2016
Forest Faves: Warrenville Grove
Published 11/17/2016
Partnering to Save Raptors
Published 11/3/2016
Prescription Burns
Published 10/20/2016
Forest Faves: McDowell Grove
Published 10/12/2016
Wolf Spider: Friend or Foe?
Published 9/27/2016
Asters: The Stars of Fall
Published 9/15/2016
Forest Faves: Herrick Lake
Published 8/31/2016
Forest Faves: Oldfield Oaks
Published 8/26/2016
Forest Faves: Meacham Grove
Published 8/16/2016
Forest Faves: Elsen's Hill
Published 7/22/2016
Pokémon Invades the Preserves
Published 7/21/2016
A Beaver Balance
Published 5/13/2016
Beyond the Bird Feeder
Published 4/28/2016
Fiddleheads and Fronds
Published 4/22/2016
Aging Trees Made Easier
Published 4/15/2016
Signs and Sounds of Spring
Published 4/15/2016
Down by the Old Mill Stream
Published 4/1/2016
Forest Jewels
Published 3/31/2016
If You Care, Leave Them There
Published 3/23/2016
Early Spring Plant Arrivals
Published 3/1/2016
Caution: Turtle Crossing
Published 2/24/2016
Know Your Invasive Species
Published 2/22/2016
Coyotes are Loyal to Love
Published 2/17/2016
More Trees, Please
Published 1/29/2016
Sowing Seeds in the Snow
Published 1/27/2016
Dunham Developments Detailed
Published 1/22/2016
2016 Stories
Published 1/1/0001
Share
Get Adobe Reader
©2016 Forest Preserve District of DuPage County
EMPLOYMENT   |   BIDS AND PROPOSALS   |   LINKS   |   RULES AND REGULATIONS
CONTACT US   |   PRIVACY POLICY   |   TERMS OF USE   |   SITE MAP