Oregon Silverspot Butterfly Population Augmentation


SCH Number
Public Agency
California Department of Parks and Recreation
Document Title
Oregon Silverspot Butterfly Population Augmentation
Document Type
NOE - Notice of Exemption
Document Description
Project proposes to capture mated adult female federally threatened Oregon silverspot butterfly (OSB) found within the coastal prairie habitat of Tolowa Dunes State Park and adjacent lands to aid in increasing the population. The project will capture up to 15 mated adult female OSB per season (July-Sep) for captive propagation, and release reared pupae (Winter-early springs) in the coastal prairies back to the same general capture locations in unoccupied suitable caterpillar habitat, and placed in 1 or 2, 3ft x 3ft x 1ft protective mesh cages anchored at each corner to the ground with small metal stakes. Stakes will penetrate the soil no more than 6 in. Once adult butterflies emerge, they will escape the cages and the cages will be removed. Alternatively, larger caterpillars may be released directly onto violet plants. Some proportion of these released individuals would then be recaptured in subsequent years for continued propagation efforts.

Contact Information

Shannon Dempsey
Agency Name
California Department of Parks and Recreation
Contact Types
Lead/Public Agency


Del Norte

Notice of Exemption

Exempt Status
Categorical Exemption
Type, Section or Code
Reasons for Exemption
Project consists of research, experimental resource management and resource evaluation activities that do not result in a serious or major disturbance to an environmental resource.

Disclaimer: The document was originally posted before CEQAnet had the capability to host attachments for the public. To obtain the original attachments for this document, please contact the lead agency at the contact information listed above. You may also contact the OPR via email at state.clearinghouse@opr.ca.gov or via phone at (916) 445-0613.

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