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February 26, 1993 General Compensation Guidelines for the Valley Elderborry Longhorn Beetle The valley elderberry longhorn beetle (Desmocerus californlcus dimorphus) was listed as a threatened species in 1980 (45 Federal Register 52907) . This animal is fully protected under the Endangered Species Act of 1973, as amended (Act) . The larvae of the beetle feed and mature within elderberry (Sambucus sp.) shrubs. Use of the plants by the early stages of this insect, a wood borer, is very rarely apparent. Frequently, the only exterior evidence of use of the shrub is the exit hole created by the larvae prior to the pupal stage. The beetle has bean found in elderberry plants with stems possessing a diameter of one inch or greater. The range of the animal extends from Redding south to Bakersfield and from the western foothills Of the sierra Nevada to the eastern foothills of the coast range, (Barr 1991; U.S. Fish and Wildlife Service 1984) . An adequate survey should be completed by a qualified biologist for the v?lley elderberry longhorn, beetle and its elderberry foodplant if the proposed project site is located within the range of the animal. The report should include the precise location of all elderberry shrubs, their height end diameter, the presence of adult exit holes and the general condition of the plants. The diameter of the stems should be measured at ground level. A map should also be included with the report indicating the major vegetational communities present on site. Tho completed study should be sent to •the U.S. Fish and Wildlife Service (Service) for review. f Take incidental to an otherwise lawful activity may be authorized by one of i two procedures. if a Federal agency in-involved with the permitting, funding, or carrying out of the project, then initiation of formal consultation between that agency and the Service pursuant to section 7 of the Act is required if it i is determined that the proposed project may affect a federally listed species. Such consultation would result in a biological opinion that addresses the anticipated effects of the project to the listed species and may authorize a limited level of incidental take. If a Federal agency is not involved with the project, and federally listed species may be taken as part of the project, then an incidental Cake permit pursusnt to section 10(a) of the Act would need to be obtained. The Service may issue such a permit upon completion of a satisfactory conservation plan for the listed species that would be affected by the project. The following mitigations should bo undertaken for the valley elderberry longhorn beetle: Avoid Habitat Whenever Possible Fence And flag each elderberry shrubs or group of these plants so that the construction crew can avoid them. Thero should be a setback of at least twenty feet from the dripline of each elderberry shrub. The area must be designated to prevent isolation of the bcotle population from other C3s. The area should be designated as populations located in adjacent at habicat for the valley elderberry longhorn beetle in perpetuity. 1 Z0'd LL£x Wd2Z:t, 2GSZ ISE Nbw 7�-L6Z8Lq;s :0i 301dd0 DH CLObS SM3S1:W0a-J