Rusty Crayfish Faxonius rusticus (Girard, 1852)Non-native  -  Invasive    Synonyms: Orconectes rusticus.
Kingdom Animalia   >   Phylum Arthropoda   >   Class Malacostraca   >   Order Decapoda   >   Family Cambaridae   >   Genus Faxonius   

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GAAL WA FR CL MOHOBABCHA CE PGAACVCHSMKEQACNTADOWISOWO
A Rusty Crayfish in Frederick Co., Maryland (8/20/2020). Note the prominent rusty spot on both sides of the carapace. Photo by Emilio Concari. (MBP list)

A Rusty Crayfish in Frederick Co., Maryland (8/20/2020). Photo by Emilio Concari. (MBP list)

A Rusty Crayfish in Washington Co., Maryland (3/16/2019). Determined by Mikey Lutmerding. Photo by Bill Hubick. (MBP list)

Rusty Crayfish in Washington Co., Maryland (3/16/2019). Note locally diagnostic smooth mandibles. Determined by Mikey Lutmerding. Photo by Bill Hubick. (MBP list)

Rusty Crayfish in Frederick Co., Maryland (10/24/2020). (c) Emilio Concari, some rights reserved (CC BY-NC). Photo by Emilio Concari. (MBP list)

Rusty Crayfish in Frederick Co., Maryland (10/24/2020). (c) Emilio Concari, some rights reserved (CC BY-NC). Photo by Emilio Concari. (MBP list)

Rusty Crayfish in Washington Co., Maryland (3/14/2021). (c) Emilio Concari, some rights reserved (CC BY-NC). Photo by Emilio Concari. (MBP list)

Rusty Crayfish in Washington Co., Maryland (3/14/2021). (c) Emilio Concari, some rights reserved (CC BY-NC). Photo by Emilio Concari. (MBP list)

Rusty Crayfish in Washington Co., Maryland (4/26/2021). (c) Emilio Concari, some rights reserved (CC BY-NC). Photo by Emilio Concari. (MBP list)

Rusty Crayfish in Frederick Co., Maryland (10/2/2021). (c) Emilio Concari, some rights reserved (CC BY-NC). Photo by Emilio Concari. (MBP list)

Rusty Crayfish in Frederick Co., Maryland (10/2/2021). (c) Emilio Concari, some rights reserved (CC BY-NC). Photo by Emilio Concari. (MBP list)

Rusty Crayfish in Frederick Co., Maryland (6/7/2022). (c) Emilio Concari, some rights reserved (CC BY-NC). Photo by Emilio Concari. (MBP list)

Rusty Crayfish in Washington Co., Maryland (8/27/2022). (c) Frode Jacobsen, some rights reserved (CC BY-NC). Photo by Frode Jacobsen. (MBP list)

Rusty Crayfish in Frederick Co., Maryland (10/24/2020). (c) Emilio Concari, some rights reserved (CC BY-NC). Photo by Emilio Concari. (MBP list)

A Rusty Crayfish in Frederick Co., Maryland (8/20/2020). Photo by Emilio Concari. (MBP list)

Rusty Crayfish in Washington Co., Maryland (5/27/2021). (c) Emilio Concari, some rights reserved (CC BY-NC). Photo by Emilio Concari. (MBP list)

Rusty Crayfish in Washington Co., Maryland (5/27/2021). (c) Emilio Concari, some rights reserved (CC BY-NC). Photo by Emilio Concari. (MBP list)

Rusty Crayfish in Washington Co., Maryland (5/27/2021). (c) Emilio Concari, some rights reserved (CC BY-NC). Photo by Emilio Concari. (MBP list)


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MBP marks as "Invasive" any taxon listed in the Maryland Invasive Species Council (MISC) list of Invasive Species of Concern in Maryland. You can read their criteria and review the lists here: https://mdinvasives.org/species-of-concern/.