Thrips

Definition and stakes

Portrait of Herbert H. Ross Herbert H. Ross,  How to Collect and Preserve Insects

“ The young of these insects are somewhat similar to the adults but are softer 48 bodied. Fig. 43 shows an adult of Thrips tabaci Lindeman, the onion thrips. Thrips suck the juice from plants. Because of their minute size, they are seldom noticed, but they can be collected in large numbers from blossoms of almost any plant. A few species of thrips, such as the onion thrips and the privet thrips, attack agricultural or horticultural plants and inflict considerable damage. A few species occasionally bite human beings. ”
Source: Gutenberg

David Miller,  Garden Pests in New Zealand

“ Many thrips pass their whole development upon the host plants, while others pass part of their lives underground. One of the commonest species met with under glass and out of doors is the greenhouse thrips (Heliothrips hæmorrhoidalis) . Thrips are readily controlled by means of nicotine-sulphate.
CHAPTER VII. Leaf-Feeding Insects. Leaf-feeding insects have their mouth-parts developed for the biting off and mastication of their food; such insects are, in general, earwigs, crickets and grasshoppers, the caterpillars of moths and butterflies, beetles and their grubs, and the grubs of saw-flies.
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Source: Gutenberg

Gustavus A. Eisen,  The Raisin Industry

“ Many use the name of thrips to denote this insect, but this is incorrect, as the thrips is an entirely different, much smaller, insect, which so far has never been injurious to the vines of this coast. In size the leaf-hopper is, at maturity, about one-tenth of an inch. In color it is [99] yellowish white, with a few red spots. When the insect approaches maturity, it jumps, but the undeveloped insect or larva only crawls, principally on the underside of the vine leaves, where their cast-off skins can be seen in all stages and sizes. The eggs are laid in the veins of the leaves. ”
Source: Gutenberg

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