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词汇 hemimetabolous
释义

Definition of hemimetabolous in English:

hemimetabolous

adjectiveˌhɛmɪmɛˈtabələsˌheməməˈtabələs
Entomology
  • (of an insect) having no pupal stage in the transition from larva to adult.

    〔昆〕(昆虫)半变态的

    Example sentencesExamples
    • The immature nymphs of hemimetabolous insects such as the grasshopper or cockroach for instance are born with adult-like morphology.
    • Not much is supposed to happen in terms of form changes throughout larval life until the end, when metamorphosis occurs in holometabolous forms, or when wings sprout out of preformed wing pads in hemimetabolous nymphs.
    • Eye development in hemimetabolous insects such as the grasshopper Schistocerca americana is a repetitive multi-step process which starts in the embryo and extends through postembryogenesis.
    • This second gene is only found in holometabolous insects, Drosophila, and silkworms but not in the more primitive hemimetabolous insects, like grasshoppers or springtails.

Derivatives

  • hemimetabolic

  • adjective
    Entomology
    • Lice are permanent hemimetabolic ectoparasites, a group found strictly on the body of the host, and they are transferred almost exclusively by bodily contact between hosts during care of young and at copulation.
      Example sentencesExamples
      • But there is another form - the hemimetabolic, which historically preceded the complete differentiation between caterpillar and butterfly.

Definition of hemimetabolous in US English:

hemimetabolous

adjectiveˌheməməˈtabələs
Entomology
  • (of an insect) having no pupal stage in the transition from larva to adult.

    〔昆〕(昆虫)半变态的

    Example sentencesExamples
    • The immature nymphs of hemimetabolous insects such as the grasshopper or cockroach for instance are born with adult-like morphology.
    • Eye development in hemimetabolous insects such as the grasshopper Schistocerca americana is a repetitive multi-step process which starts in the embryo and extends through postembryogenesis.
    • This second gene is only found in holometabolous insects, Drosophila, and silkworms but not in the more primitive hemimetabolous insects, like grasshoppers or springtails.
    • Not much is supposed to happen in terms of form changes throughout larval life until the end, when metamorphosis occurs in holometabolous forms, or when wings sprout out of preformed wing pads in hemimetabolous nymphs.
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