An Allegheny Crayfish in Garrett Co., Maryland (8/11/2019). Determined by Jason D. Roberts/BugGuide. Often confused with F. virilis; note the slightly wider areola.

View Record Details Photo by Emilio Concari MBP List

An Allegheny Crayfish in Garrett Co., Maryland (8/28/2016). Determined by Mikey Lutmerding.

View Record Details Photo by Bill Hubick MBP List

An Allegheny Crayfish in Garrett Co., Maryland (8/28/2016). Determined by Mikey Lutmerding.

View Record Details Photo by Bill Hubick MBP List

Allegheny Crayfish in Frederick Co., Maryland (10/24/2020). (c) Emilio Concari, some rights reserved (<a rel='license' href='http://creativecommons.org/licenses/by-nc/4.0/'>CC BY-NC</a>). (Photo ID: 306719 - Psn: 44)

Allegheny Crayfish in Frederick Co., Maryland (10/24/2020). (c) Emilio Concari, some rights reserved (CC BY-NC).

View Record Details Photo by Emilio Concari MBP List

An Allegheny Crayfish in Garrett Co., Maryland (6/10/2017).

View Record Details Photo by Bill Hubick MBP List

Allegheny Crayfish in Frederick Co., Maryland (10/24/2020). (c) Emilio Concari, some rights reserved (CC BY-NC).

View Record Details Photo by Emilio Concari MBP List

Allegheny Crayfish in Frederick Co., Maryland (3/27/2021). (c) Emilio Concari, some rights reserved (<a rel='license' href='http://creativecommons.org/licenses/by-nc/4.0/'>CC BY-NC</a>). (Photo ID: 353832 - Psn: 45)

Allegheny Crayfish in Frederick Co., Maryland (3/27/2021). (c) Emilio Concari, some rights reserved (CC BY-NC).

View Record Details Photo by Emilio Concari MBP List

Allegheny Crayfish in Frederick Co., Maryland (Date obscured). (c) trinectes, all rights reserved. (Photo ID: 306432 - Psn: 55)

View Record Details Photo by Robert Aguilar, SERC MBP List

Allegheny Crayfish in Frederick Co., Maryland (5/10/2021). (c) Emilio Concari, some rights reserved (<a rel='license' href='http://creativecommons.org/licenses/by-nc/4.0/'>CC BY-NC</a>). (Photo ID: 375922 - Psn: 55)

Allegheny Crayfish in Frederick Co., Maryland (5/10/2021). (c) Emilio Concari, some rights reserved (CC BY-NC).

View Record Details Photo by Emilio Concari MBP List

Allegheny Crayfish in Garrett Co., Maryland (5/10/2023). (c) Emilio Concari, some rights reserved (<a rel='license' href='http://creativecommons.org/licenses/by-nc/4.0/'>CC BY-NC</a>). (Photo ID: 800477 - Psn: 55)

Allegheny Crayfish in Garrett Co., Maryland (5/10/2023). (c) Emilio Concari, some rights reserved (CC BY-NC).

View Record Details Photo by Emilio Concari MBP List

Allegheny Crayfish in Garrett Co., Maryland (5/10/2023). (c) Emilio Concari, some rights reserved (CC BY-NC).

View Record Details Photo by Emilio Concari MBP List

Allegheny Crayfish in Frederick Co., Maryland (3/27/2021). (c) Emilio Concari, some rights reserved (CC BY-NC).

View Record Details Photo by Emilio Concari MBP List

Allegheny Crayfish in Frederick Co., Maryland (5/10/2021). (c) Emilio Concari, some rights reserved (CC BY-NC).

View Record Details Photo by Emilio Concari MBP List

An Allegheny Crayfish in Garrett Co., Maryland (8/28/2016). Determined by Mikey Lutmerding.

View Record Details Photo by Bill Hubick MBP List

An Allegheny Crayfish with eggs in Washington Co., Maryland (4/26/2019).

View Record Details Photo by Bill Hubick MBP List

Allegheny Crayfish in Frederick Co., Maryland (10/24/2020). (c) Emilio Concari, some rights reserved (CC BY-NC).

View Record Details Photo by Emilio Concari MBP List

Allegheny Crayfish in Washington Co., Maryland (5/27/2021). (c) Emilio Concari, some rights reserved (<a rel='license' href='http://creativecommons.org/licenses/by-nc/4.0/'>CC BY-NC</a>). (Photo ID: 385953 - Psn: 200)

Allegheny Crayfish in Washington Co., Maryland (5/27/2021). (c) Emilio Concari, some rights reserved (CC BY-NC).

View Record Details Photo by Emilio Concari MBP List

Allegheny Crayfish in Washington Co., Maryland (5/27/2021). (c) Emilio Concari, some rights reserved (CC BY-NC).

View Record Details Photo by Emilio Concari MBP List

Map Snapshot

31 Records

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Status

Allegheny Crayfish is native to the northeastern U.S. and is found in slow-moving water with rocky substrates.

Relationships

Displacement by non-native crayfish such as Rusty Crayfish is a regional threat.

Seasonality Summary

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Resources

View at iNaturalist Search Google Images Search MBP Facebook posts

View images at BugGuide

Citations

No citations linked for this taxon yet.

Use of media featured on Maryland Biodiversity Project is only permitted with express permission of the photographer.

An Allegheny Crayfish in Garrett Co., Maryland (8/11/2019). Determined by Jason D. Roberts/BugGuide. Often confused with F. virilis; note the slightly wider areola. View Record Details Media by Emilio Concari.

An Allegheny Crayfish in Garrett Co., Maryland (8/28/2016). Determined by Mikey Lutmerding. View Record Details Media by Bill Hubick.

Allegheny Crayfish in Frederick Co., Maryland (10/24/2020). (c) Emilio Concari, some rights reserved (CC BY-NC). View Record Details Media by Emilio Concari.

An Allegheny Crayfish in Garrett Co., Maryland (6/10/2017). View Record Details Media by Bill Hubick.

Allegheny Crayfish in Frederick Co., Maryland (10/24/2020). (c) Emilio Concari, some rights reserved (CC BY-NC). View Record Details Media by Emilio Concari.

Allegheny Crayfish in Frederick Co., Maryland (3/27/2021). (c) Emilio Concari, some rights reserved (CC BY-NC). View Record Details Media by Emilio Concari.

Allegheny Crayfish in Frederick Co., Maryland (5/10/2021). (c) Emilio Concari, some rights reserved (CC BY-NC). View Record Details Media by Emilio Concari.

Allegheny Crayfish in Garrett Co., Maryland (5/10/2023). (c) Emilio Concari, some rights reserved (CC BY-NC). View Record Details Media by Emilio Concari.

Allegheny Crayfish in Frederick Co., Maryland (3/27/2021). (c) Emilio Concari, some rights reserved (CC BY-NC). View Record Details Media by Emilio Concari.

Allegheny Crayfish in Frederick Co., Maryland (5/10/2021). (c) Emilio Concari, some rights reserved (CC BY-NC). View Record Details Media by Emilio Concari.

An Allegheny Crayfish in Garrett Co., Maryland (8/28/2016). Determined by Mikey Lutmerding. View Record Details Media by Bill Hubick.

An Allegheny Crayfish with eggs in Washington Co., Maryland (4/26/2019). View Record Details Media by Bill Hubick.

Allegheny Crayfish in Frederick Co., Maryland (10/24/2020). (c) Emilio Concari, some rights reserved (CC BY-NC). View Record Details Media by Emilio Concari.

Allegheny Crayfish in Washington Co., Maryland (5/27/2021). (c) Emilio Concari, some rights reserved (CC BY-NC). View Record Details Media by Emilio Concari.