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Content tagged with "aquatic insect"

Photo of an adult stonefly on a leaf

Stoneflies

There are hundreds of species in North America
Stoneflies have a lot in common with mayflies, caddisflies, dragonflies and dobsonflies: They begin life as aquatic larvae, then molt and become winged adults. Many fish find stoneflies irresistible, and anglers take advantage of it!

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Photo of an adult stonefly on a leaf

Stonefly (Adult)

Adult stoneflies have two pairs of wings that are clear, membranous and finely veined. The wings rest closely down the back of the body, the forewings covering the hindwings. Antennae are threadlike and long.

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Photo of stonefly naiad on a rock underwater

Stonefly Naiad

Stonefly naiads are aquatic, flattened, with 6 sprawling legs and a segmented abdomen bearing 2 long, antenna-like "tails" (cerci). Gills are tuftlike and usually located at the leg bases, beneath the body.

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Photo of a stonefly naiad clinging to a rock underwater

Stonefly Naiad In Habitat

There are several families of stoneflies in North America. Identifying the many species requires using a magnifying lens to note subtle details of anatomy. This individual is probably in the family Perlidae ("common stoneflies").

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Photo of a water boatman

Water Boatman "Oars"

In water boatmen, the last pair of legs are elongated and function like "oars." The "foot" portion of the tiny forelegs has only one segment and is shaped like a scoop.

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Photo of a water boatman

Water Boatman (Viewed From Above)

Water boatmen typically have crosslines on their backs, and they swim with their back facing upward (not "belly-up").

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Photo of a water boatman

Water Boatman Underwater

A thin, silvery bubble of air, trapped against the body, enables the insect to stay for periods underwater.

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Photo of a water boatman

Water Boatmen

About 125 species in North America in the family Corixidae
Water boatmen are one of the few aquatic “true bugs” that are not predaceous and do not bite people. Instead, they suck juices from algae and detritus. Only a few species eat other small aquatic creatures. Learn more about these nifty water bugs.

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Photo of a water strider amid duckweed leaves

Water Strider and Duckweed

Water striders and duckweed both live on the surface of water. Water striders have velvety body hairs that shed water and keep them dry. Meanwhile, a waxy coating on the top of duckweed fronds helps them shed water and stay afloat.

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Photo of a single water strider

Water Strider On Water Surface

Water striders have water-repellant hairs on the hind and middle legs that allow them to skate on the surface of water.

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