Specimen Information

Faxonius virilis
Faxonius virilis
(Virile Crayfish)
Native Transplant

Specimen ID4745
Common NameVirile Crayfish
LocalityCosumnes River [see Sacramento, CA area]
Mapping AccuracyApproximate
HUC8 NameUpper Cosumnes
HUC8 Number18040013
Collection Year1992
Year AccuracyActual
Potential Pathwaydispersed
Reference 1
Ref. Number:10319
Author:Cohen, A.N., and J.T. Carlton.
Title:Nonindigenous Aquatic Species in a United States Estuary, A Case Study of the Biological Invasions of the San Francisco Bay and Delta.
Journal:Report for USFWS, WA DC, and Connecticut Sea Grant
Publisher:A report for the United States Fish and Wildlife Service, Washington, DC and The National Sea Grant College Program Connecticut Sea Grant.
Pages:246 pp
Reference 2
Ref. Number:9262
Author:Riegel, J.A.
Title:The systematics and distribution of crayfishes in California.
Journal:California Fish and Game
Reference 3
Ref. Number:9263
Author:Herbold, B., A.D. Jassby, and P.B. Moyle.
Title:Status an trends report on aquatic resources in the San Francisco Estuary.
Publisher:San Francisco Esuary Project.
Pages:257 pp
CommentsNative to Indiana, Illinois. Were brought to a lab at Chico State College. Eats rice shoots and is considered a pest. Has led to the decline of the native Shasta crayfish, Pacifasctacus fortis. (Year is publication date of source document.)
Record TypeLiterature


The data represented on this site vary in accuracy, scale, completeness, extent of coverage and origin. It is the user's responsibility to use these data consistent with their intended purpose and within stated limitations. We highly recommend reviewing metadata files prior to interpreting these data.

Citation information: U.S. Geological Survey. [2024]. Nonindigenous Aquatic Species Database. Gainesville, Florida. Accessed [3/1/2024].

Contact us if you are using data from this site for a publication to make sure the data are being used appropriately and for potential co-authorship if warranted.

For general information and questions about the database, contact Wesley Daniel. For problems and technical issues, contact Matthew Neilson.