scale insect

The Creationの著者は昆虫学者なので色々な昆虫が出てくるのは当然ですが、学名のような難しい名前は別として、英名を覚えておきたい昆虫も出てきました。
I realized upon seeing the ants and treehoppers at Concepcion de la Vega, lies in the scorched appearance of the dying crop plants. This is not an effect produced by any known ants, which very seldom consume plant material. But it does result from heavy infestations of sap-sucking homopterous insects, including aphids, scale insects--and tree hoppers. Fire ants are among the kinds of ants that protect these insects, and in exchange the homopterans provide them with liquid excrement rich in sugar and amino acids.
"homopterous insects" と "homopterans" は同じ昆虫類を指して、植物の液を吸う虫と説明がありますが、対応する日本語は知りません。しかし、"scale insects" の方は "scale" が付いているので鱗を備えた様な虫の様ですが何でしょう？　辞書を見ます。
・Oxford English Dictionary: A small insect with a protective shieldlike scale. It spends most of its life attached by its mouth to a single plant, sometimes occurring in such large numbers that it becomes a serious pest.
・Collins English Dictionary: any small homopterous insect of the family Coccidae and related families, which typically live and feed on plants and secrete a protective scale around themselves. Many species, such as the San Jose scale, are important pests.: A scale insect may colonise the reverse sides of leaves.
やはりこの手の虫は写真を見た方が早いですね。Wikipediaに掲載の写真を見るとどうもカイガラムシの類を指すようです。