| 单词 | pear sucker |
| 释义 | > as lemmaspear sucker pear sucker n. a psyllid bug of European origin, Cacopsylla (or Psylla) pyricola, a major pest of pear trees which it damages in several ways, esp. by feeding on sap and producing excessive honeydew which encourages the growth of certain moulds. ΘΚΠ the world > animals > invertebrates > phylum Arthropoda > class Insecta > subclass Pterygota > [noun] > division Exopterygota or Hemimetabola > order Hemiptera > suborder Homoptera > family Psyllidae > member of genus Psylla psylla1852 pear sucker1881 pear-louse1890 pear psylla1892 1881 E. A. Ormerod Man. Injurious Insects iii. 286 Jumping Plant-louse. Pear-sucker. 1882 Garden 28 Jan. 61/2 As soon as the buds begin to burst in the spring, the Pear suckers leave their winter quarters. 1903 E. Bartrum Bk. Pear & Plum 38 The Pear Sucker is a jumping plant-louse which early in the season sucks the juices of the tree about the axils of the leaves. 2000 Herald (Glasgow) (Nexis) 30 Sept. 36 The pear sucker (Psylla pyricola), which can seriously reduce the yield of this fruiting tree, is a small blackish-green sap-feeding insect just 1/16″ (2mm) long. < as lemmas |
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