Any of several small insects especially aphids that feed by sucking the juices from plants.
1 Aphis, you know, is the same as aphid, or plant louse .
2 The name of the plant louse that infests pear trees is the pear-tree psylla.
3 Their natural size is no larger than a plant louse .
4 But a bee's tongue, delicate as it is, would crush a fragile plant louse .
5 How does the squash bug resemble the plant louse ?
6 They are supposed to feed also on other vegetable-eating insects as well as the plant louse .
7 The aphis, or plant louse , often covers the young shoots of the vine, sucking its juices.
8 The plant louse could produce in its twelfth brood 10,000,000,000,000,000,000,000 offspring.
9 Throughout the winter a single chickadee will destroy great numbers of the eggs of the cankerworm moth and of the plant louse .
10 They are so small, each one no larger than a plant louse , that you would not think they could do much harm.
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