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ViewAttendees 8

P-IE

Section Symposium

Fundamental Biology to Practical Management of Ambrosia Beetles in Horticultural Tree Agroecosystems

11: Pest status and classical biological control of Scolytinae pests of coffee in Hawai'i

Tuesday, November 17, 2020
2:35 PM - 2:50 PM EST
Livestream
A number of Scolytinae species are serious pests of agricultural crops and native plant species in Hawaii. Among the most significant are coffee berry borer (Hypothenemus hampei) and black twig borer (Xylosandrus compactus). Coffee berry borer is restricted to using coffee as a host, while black twig borer attacks coffee, numerous other crops and native tree species. We currently have projects addressing biological control of coffee berry borer, and IPM options for black twig borer. Importation of Phymastichus coffea (Eulophidae), an adult parasitoid of coffee berry borer is being pursued. We have completed host-range testing, concentrating on potential endemic non-target species. The results are encouraging, showing that P. coffea does not attack any native species, or any beneficial beetles in Hawaii. We are also considering the potential that chemical repellents have for protecting coffee and native plant species from H. hampei and X. compactusrespectively. We have obtained results with verbenone that show potential for repellence under field conditions. The overall IPM approach to managing these beetles in Hawaii will be reviewed.