Found this great poster on crayfish in Mississippi, at the following site, https://www.researchgate.net/publication/234154354_Crayfishes_of_Mississippi_poster with the following abstract:
“This is a wall poster showing about half of the crayfish species in the state of Mississippi. For a free copy of the poster, send your mailing address to Susan Adams. Poster text: Crayfishes, also known as crawfish, mudbugs, and crawdads, are related to shrimps, lobsters, and crabs. The southeastern U.S. has the highest crayfish diversity in the world. Mississippi has about 63 named crayfish species and others that are still unnamed. Six of the seven species in the genus Hobbseus, as well as 11 other species, live only in Mississippi. Crayfishes live in a wide variety of habitats, including lakes, rivers, streams, springs, seasonally wet habitats such as roadside ditches, and even relatively dry savannahs and lawns. Nearly all crayfishes will burrow during adverse conditions such as drought, but some species spend nearly all of their lives in complex burrows. Burrows are marked by holes in the ground or by the mud “chimneys” that often seal burrow entrances. In addition to being a popular food for people, crayfishes play diverse and important ecological roles in the various habitats they occupy. The greatest threats to crayfishes include habitat destruction, pollution, and introduced species and diseases. Some species are at risk due simply to their naturally limited distributions. For example, the Camp Shelby Burrowing Crayfish occurs only in a small portion of Perry County, and steps are being taken to conserve it. You can help conserve crayfishes by preserving their habitats and by releasing animals only into habitats where they were captured.”
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