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Image #   99438B
Name:   Gall-forming psyllid nymph (Trioza sp.)
Copyright:   Copyright 1999 Dennis Kunkel Microscopy, Inc.
Description:   Caption: Psyllid nymph (Trioza sp.) from the Hawaiian Ohia lehua tree (Metrosideros polymorpha). Trioza spp. (Trozia hawaiiensis; Trozia lehua) lay eggs in the Hawaiian Ohia lehua leaf. Eggs develop and a leaf galls begin to form around the developing insects. The developing stages (larvae and nymph) feed off on the leaf until the immature adults emerge. This gall-forming psyllid causes major damage to some trees and eventual death. Psyllids, also known as jumping plant lice, are small plant-feeding insects that tend to be host specific. The Asian Citrus Psyllid (Diaphorina citri) carries a harmful bacterium (Liberibacter asiaticum) that causes a major disease in citrus plants. It affects the quality, flavor, and production as well as causing citrus trees to die.
Magnification*: x20
Type: SEM
    *(Magnifications are based on a 35mm slide image of 24mm in the narrow dimension.)
Keywords:   agricultural disease Hawaii leaf gall Metrosideros polymorpha Ohia lehua pest SEM Triozidae 99438B Hemiptera Psylloidea insect pest insect pests plant pest plant pests psyllid psyllids gall forming psyllid gall forming psyllids gall-forming psyllid gall-forming psyllids insect gall insect galls Trioza Trioza hawaiiensis Trioza lehua Hawaii endemic psyllid Hawaii endemic psyllids Hawaiian endemic psyllid Hawaiian endemic psyllids endemic psyllid endemic psyllids jumping plant lice jumping plant louse plant lice plant louse Hawaiian borer Hawaiian leaf borer leaf borer insect insect nymph insect nymphs insects plant disease insect larva insect larvae larva larvae nymph nymphs leaf galls crop damage insect damage insect damages plant feeding insect plant feeding insects plant-feeding insect plant-feeding insects gall

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