jumping plant louse

any of numerous lice, of the family Psyllidae, that feed on plant juices and are sometimes pests of fruits and vegetables. Also called psylla, psyllid.
[1900-05]

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insect
      any member of the approximately 2,000 species of the insect family Psyllidae (order Homoptera). The jumping plant louse is about the size of a pinhead. Its head, long antennae and legs, and transparent wings resemble, on a reduced scale, the features of the cicada. Eggs are deposited on leaves or twigs of the host plant; the nymphs, flattened and broadly ovate, usually feed clustered together. Some species are covered with wax; others produce galls on the host plant.

      When the insects are abundant, the honeydew (a sweet by-product of digestion) they excrete forms a film over leaves and branches, sometimes dripping from the foliage like rain. The copious, sweet, waxy secretion of the Australian sugar lerp insect has been collected and eaten by Aborigines. The apple sucker (Psylla mali) and the pear sucker (P. pyricola) are injurious to the plants they infest; the nymphs damage blossoms and shoots and cause a plant's leaves to shrivel.

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Universalium. 2010.

Look at other dictionaries:

  • jumping plant louse — noun small active cicada like insect with hind legs adapted for leaping; feeds on plant juices • Syn: ↑psylla, ↑psyllid • Hypernyms: ↑plant louse, ↑louse • Member Holonyms: ↑Psyllidae, ↑ …   Useful english dictionary

  • Jumping plant louse — Taxobox name = Psyllidae image caption = Psylla alni image width = 250px regnum = Animalia phylum = Arthropoda classis = Insecta ordo = Hemiptera subordo = Sternorrhyncha superfamilia = Psylloidea familia = Psyllidae subdivision ranks = Genera… …   Wikipedia

  • jumping plant louse — noun Date: 1881 any of numerous plant lice (family Psyllidae) with the femurs thickened and adapted for leaping …   New Collegiate Dictionary

  • jumping plant louse — noun any of various psyllids …   Australian English dictionary

  • plant louse — noun any of several small insects especially aphids that feed by sucking the juices from plants • Syn: ↑louse • Derivationally related forms: ↑lousy (for: ↑louse) • Hypernyms: ↑homopterous insect, ↑ …   Useful english dictionary

  • plant louse — noun Date: 1805 aphid; also any of various small insects (as a jumping plant louse) of similar habits …   New Collegiate Dictionary

  • Jumping louse — Jumping Jump ing, p. a. & vb. n. of {Jump}, to leap. [1913 Webster] {Jumping bean}, a seed of a Mexican {Euphorbia}, containing the larva of a moth ({Carpocapsa saltitans}). The larva by its sudden movements causes the seed to roll to roll and… …   The Collaborative International Dictionary of English

  • Jumping — Jump ing, p. a. & vb. n. of {Jump}, to leap. [1913 Webster] {Jumping bean}, a seed of a Mexican {Euphorbia}, containing the larva of a moth ({Carpocapsa saltitans}). The larva by its sudden movements causes the seed to roll to roll and jump about …   The Collaborative International Dictionary of English

  • Jumping bean — Jumping Jump ing, p. a. & vb. n. of {Jump}, to leap. [1913 Webster] {Jumping bean}, a seed of a Mexican {Euphorbia}, containing the larva of a moth ({Carpocapsa saltitans}). The larva by its sudden movements causes the seed to roll to roll and… …   The Collaborative International Dictionary of English

  • Jumping deer — Jumping Jump ing, p. a. & vb. n. of {Jump}, to leap. [1913 Webster] {Jumping bean}, a seed of a Mexican {Euphorbia}, containing the larva of a moth ({Carpocapsa saltitans}). The larva by its sudden movements causes the seed to roll to roll and… …   The Collaborative International Dictionary of English

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