Content tagged with "aquatic insect"

Stoneflies

Photo of an adult stonefly on a leaf
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! More

Stonefly (Adult)

Photo of an adult stonefly on a leaf
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. More

Stonefly Naiad

Photo of stonefly naiad on a rock underwater
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. More

Stonefly Naiad In Habitat

Photo of a stonefly naiad clinging to a rock underwater
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"). More

Water Boatman "Oars"

Photo of a water boatman
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. More

Water Boatman (Viewed From Above)

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

Water Boatman Underwater

Photo of a water boatman
A thin, silvery bubble of air, trapped against the body, enables the insect to stay for periods underwater. More

Water Boatmen

Photo of a water boatman
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. More

Water Strider and Duckweed

Photo of a water strider amid duckweed leaves
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. More

Water Strider On Water Surface

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