Allegheny Crayfish
Faxonius obscurus (Hagen, 1870)
Allegheny Crayfish: https://marylandbiodiversity.com/species/481
Synonyms
Orconectes obscurus 
Tags
S3 (Watch 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 Snapshot

Resources

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Source: Wikipedia

Allegheny crayfish
eggs on Faxonius obscurus

Secure  (NatureServe)[2]
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Arthropoda
Class: Malacostraca
Order: Decapoda
Suborder: Pleocyemata
Family: Cambaridae
Genus: Faxonius
Species:
F. obscurus
Binomial name
Faxonius obscurus
(Hagen, 1870)
Synonyms
  • Orconectes obscurus
  • Cambarus obscurus

Faxonius obscurus is a species of crayfish in the family Cambaridae. It is native to the northeastern United States, where it occurs in Maryland, New York, Ohio, Pennsylvania, Virginia, and West Virginia. It is an introduced species in adjacent regions, including Massachusetts, Vermont, and Ontario in Canada.[1] It is known commonly as the Allegheny crayfish[2] and the obscure crayfish.

This species lives in slow-moving waterways and pools with rocky substrates, where it hides beneath rocks.[1] It also burrows into the substrate.[2]

This species is common to abundant. It faces minor threats in some parts of its range. It has been displaced by the rusty crayfish, a related species that is more aggressive and outcompetes other crayfish in its habitat. Other threats include water pollution, especially from mine runoff.[1]

It has become an introduced species itself in some areas, often when released from bait buckets.[3]

References

[edit]
Wikimedia Commons has media related to Orconectes obscurus.
  1. ^ a b c d Adams, S.; Schuster, G.A. & Taylor, C.A. (2010). "Orconectes obscurus". IUCN Red List of Threatened Species. 2010: e.T153781A4544191. doi:10.2305/IUCN.UK.2010-3.RLTS.T153781A4544191.en. Retrieved 11 November 2022.
  2. ^ a b c "Faxonius obscurus". NatureServe Explorer An online encyclopedia of life. 7.1. NatureServe. Retrieved 11 November 2022.
  3. ^ Benson, A. Orconectes obscurus. USGS Nonindigenous Aquatic Species Database. Revised 2004.


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