Eastern hemlock (Tsuga canadensis) and Carolina hemlock (T. caroliniana) are susceptible to injury by the non-native hemlock woolly adelgid (HWA). Other hemlock species in Asia and western North America are seldom damaged by this sucking insect. We examined hemlocks in plantations at Longwood Gardens, Kennett Square, PA and University of Rhode Island, Kingston, which together had 7 of the world's 8 hemlock species. We measured natural occurrence and fecundity of HWA and ability to resist artificial infestation of HWA. We also examined the foliar terpenoids.
Species 1: Homoptera Adelgidae Adelges tsugae (hemlock woolly adelgid)
Keywords: host plant resistance
Back to Ten-Minute Papers, Subsection Fa. Host Plant Resistance and F. Crop Protection Entomology
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