Habitat and Populations of the Valley Elderberry Longhorn Beetle Along the Sacramento River

Abstract

Prior to 1985, the valley elderberry longhorn beetle, a threatened species protected under the federal Endangered Species Act, was known only from northern California riparian areas along the American River and Putah Creek in the Sacramento Valley, and along several rivers in the northern San Joaquin Valley. During 1985-1987, our study extended the known range of the beetle northward along the Sacramento River to Red Bluff by searching riparian areas for elderberry shrubs, the required habitat for beetle larvae; by searching shrubs for beetle emergence holes; and by searching for adult beetles during their brief spring emergence period. The survey results showed that the beetle is distributed widely along the river but is rare.

Parent Publication

• Proceedings of the California riparian systems conference: protection, management, and restoration for the 1990s; 1988 September 22-24; Davis, CA.

Citation

Lang, F. Jordan; Jokerst, James D.; Sutter, Gregory E. 1989. Habitat and Populations of the Valley Elderberry Longhorn Beetle Along the Sacramento River. In: Abell, Dana L., Technical Coordinator. 1989. Proceedings of the California Riparian Systems Conference: protection, management, and restoration for the 1990s; 1988 September 22-24; Davis, CA. Gen. Tech. Rep. PSW-GTR-110. Berkeley, CA: Pacific Southwest Forest and Range Experiment Station, Forest Service, U.S. Department of Agriculture; p. 242-247