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Content tagged with "Aquatic Invertebrates"

wabash pigtoe

Wabash Pigtoe

Fusconaia flava
A widespread mussel that releases its larvae in tiny red packages to attract fish hosts.

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wartyback

Wartyback

Quadrula nodulata
This favored habitat of this vulnerable species is large streams or rivers in firm sand and mud. The bumps on the shell may help to anchor it in the river bottom.

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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 two water penny beetles clinging to a wet rock.

Water Penny Beetles

Beetles in the family Psephenidae
Water pennies are one of the truly nifty aquatic invertebrates that bring out the child in all of us. Some of them really do look like pennies!

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Photo of a collared water scavenger beetle showing back.

Water Scavenger Beetles

Beetles in the family Hydrophilidae
Water scavenger beetles are a mostly aquatic family. They are similar to predaceous diving beetles, but unlike them many have a distinctive spine running down the center of their bellies.

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Photo of a single water strider

Water Striders

Aquarius remigis; also species in the genus Gerris
Also called “pond skaters” and “water spiders,” water striders are hard not to notice. Water-repellant hairs on the hind and middle legs allow these nimble insects to skate on the surface of the water.

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Photo of a whirligig beetle viewed from above

Whirligig Beetles

Species in the beetle family Gyrinidae
Groups of these aquatic beetles swim on the surface of water in quick, random patterns, searching for food. They have two pairs of eyes—one pair above the water, and one pair below—which helps them to quickly and accurately capture their prey.

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white heelsplitter

White Heelsplitter

Lasmigona complanata
The shell of this mollusk is large and impressive in overall size. Although fairly flat, it can be more than 8 inches long. A large wing on the heelsplitter can be painful if you step on it.

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Image of a white river crayfish

White River Crayfish

Procambarus acutus
Adults of this widespread species are usually a deep burgundy red with a black V-shaped stripe on the abdomen. Juveniles are gray with dark spots scattered over the carapace.

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Image of williams' crayfish

Williams' Crayfish

Orconectes williamsi
This is a small, rather plain crayfish without bright colors or bold markings. Its most distinctive feature is a pale, vase-shaped zone along the middle of the dark olive-tan carapace. It is found only in the upper White River drainage of Missouri and Arkansas.

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