Polyphagous shot hole borer (SHB), Euwallacea sp.Fusarium na-anwụ anwụ, Fusarium euwallaceae, bụ ụmụ ahụhụ ọhụrụ: mgbagwoju ọrịa na-akpata mmerụ ahụ na ịnwụ n'ọtụtụ osisi na osisi siri ike na nke ịchọ mma na ndịda California. Ebe ambrosia nwere ọtụtụ ndị ọbịa ma nwee ike mezue mmepe na> ụdị 20, gụnyere ube oyibo, Persea americana, maple ukwu, Acer macrophyllum, Okenye igbe California, Acer ọzọ Dị iche. californicum, California sycamore, Platanus agbụrụ, Coast ndụ osisi oak, Quercus agrifolia, castorbean, Ricinus komunis, uhie willow, Salix laevigata, na alder ọcha, Alnus rhombifolia.
US Forest Service Region 5 Nchekwa ahụike ọhịa mepụtara akwụkwọ na nso nso a na-egosi mgbaàmà mmerụ ahụ nke SHB kere. Pịa ebe a iji budata akwụkwọ ahụ.