Black twig borer...a tree killer in Hawaii

Robert E. Nelson; Clifton J. Davis

Treesearch

Black twig borer...a tree killer in Hawaii

Informally Refereed

Authors:

Robert E. Nelson, Clifton J. Davis

Year:

1972

Type:

Research Note

Station:

Pacific Southwest Research Station

Source:

Res. Note PSW-RN-274. Berkeley, CA: U.S. Department of Agriculture, Forest Service, Pacific Southwest Forest and Range Experiment Station. 4 p

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Download (PDF 431 KB): https://research.fs.usda.gov/download/treesearch/30792.pdf

Abstract

The black twig borer (Xylosandrus compactus Eichhoff), first discovered in Hawaii in 1961, has become widespread on many host plants throughout the islands. Beetle infestations have caused heavy damage to trees but only recently have attacks been associated with death of apparently vigourous trees in forest stands. The beetle and its associated micro-organisms have been identified as associated with the death of five tree species in planted forests on Oahu.

Keywords

Xylosandrus compactus, Tristania conferta, Syncarpia glomulifera, Melaleuca leucadendron, Eucalyptus sideroxylon, plantations stands, Eucalyptus pilularis, insect damage, Hawaii, crown mortality, tree mortality

Citation

Nelson, Robert E.; Davis, Clifton J. 1972. Black twig borer...a tree killer in Hawaii. Res. Note PSW-RN-274. Berkeley, CA: U.S. Department of Agriculture, Forest Service, Pacific Southwest Forest and Range Experiment Station. 4 p