| Specimen ID | 4754 |
| Group | Crustaceans-Crayfish |
| Genus | Pacifastacus |
| Species | leniusculus |
| Common Name | Signal Crayfish |
| State | CA |
| County | Monterey |
| Locality | Monterey County |
| Mapping Accuracy | Centroid |
| Centroid Type | County |
| HUC8 Name | Central California Coastal |
| HUC8 Number | 18060000 |
| Map | |
| Collection Year | 1959 |
| Year Accuracy | Actual |
| Potential Pathway | dispersed |
| Status | established |
| Reference 1 |
| Ref. Number: | 10319 |
| Author: | Cohen, A.N., and J.T. Carlton. |
| Date: | 1995 |
| 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 |
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| Reference 2 |
| Ref. Number: | 9262 |
| Author: | Riegel, J.A. |
| Date: | 1959 |
| Title: | The systematics and distribution of crayfishes in California. |
| Journal: | California Fish and Game |
| Volume: | 45 |
| Issue: | 1 |
| Pages: | 29-50 |
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| Comments | Native to Oregon and Washington. This crayfish may have contributed to the extinction of the native sooty crayfish, Pacifastacus nigrescens. Also it may have contributed to extirpation of Pacifastacus from half of its range. Year is publication date. |
| Record Type | Literature |
| Freshwater/Marine | Freshwater |
