Content tagged with "Aquatic Invertebrates"

Photo of an Ozark crayfish.

Ozark Crayfish

Orconectes ozarkae
The Ozark crayfish is light brown to reddish brown with numerous black specks on the pincers and often on the abdomen as well. The pincers are broad and powerful. It lives in the White and Black stream systems.

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paper pondshell

Paper Pondshell (Paper Floater)

Utterbackia imbecillis
Unlike most other freshwater mussels, this species is hermaphrodic: An individual mussel can be both male and female.

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Photo of a papershell crayfish, also called calico crayfish.

Papershell Crayfish (Calico Crayfish)

Orconectes immunis
The papershell crayfish is rather plain: gray-green with a pale central zone along the middle of the carapace and abdomen. The pincers are orange-tipped, and in mature males are tinged with purple. It is usually only found in the northern half of the state.

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Quadrula pustulosa
While the pimpleback is usually bumpy, some individuals are perfectly smooth.

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pink heelsplitter

Pink Heelsplitter

Potamilus alatus
A large dorsal wing and purple lining make identification of this widespread mussel easy.

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pink mucket

Pink Mucket

Lampsilis abrupta
This endangered native mussel lives in flowing waters of large streams among gravel and cobble.

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pink papershell

Pink Papershell

Potamilus ohiensis
This species enjoys the same geographic distribution in our state as the pink heelsplitter, and it generally resembles that species, too. But as the name suggests, the pink papershell usually has a thinner shell and is smaller. Also, it prefers rather shallow water with a good current.

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Pistolgrip (Buckhorn)

Tritogonia verrucosa
Shaped like a checkered gunstock, with its unique, turned-down edge, pistolgrips are easy to identify.

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plain pocketbook

Plain Pocketbook (Pocketbook)

Lampsilis cardium
One of the most common and widespread mussels in our state, its oval shape, relatively large size and frequent occurrence make it one of the most easily recognized.

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pond mussel

Pond Mussel

Ligumia subrostrata
This widespread species is one of the few Missouri mussels successful in shallow ponds and lakes.

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