hemimetamorphosis

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Definition

Noun: - Incomplete or partial metamorphosis in insects: A type of insect development where the young (nymphs) resemble the adults but are smaller, lack wings, and are not sexually mature. The change to the adult form occurs gradually through a series of molts, without a pupal stage.

Usage

This is a specialized biological term. It is used in scientific contexts, particularly in entomology (the study of insects), to describe a specific life cycle pattern. - Hemimetamorphosis is characteristic of insects such as grasshoppers, cockroaches, and true bugs. - The term contrasts with holometamorphosis (complete metamorphosis), which includes a distinct larval stage and a pupal stage.

Examples
  • The biology textbook explained the difference between hemimetamorphosis and holometabolous development.
  • Dragonflies undergo hemimetamorphosis; their aquatic nymphs, called naiads, molt several times before emerging as flying adults.
  • Insects exhibiting hemimetamorphosis do not have a resting pupal stage in their life cycle.
Advanced Usage
  • The adjective form is hemimetabolous.
    • Grasshoppers are hemimetabolous insects.
  • The process itself can be described with the verb to undergo hemimetamorphosis.
    • The order Orthoptera typically undergoes hemimetamorphosis.
Variants and Related Words
  • Hemimetabolous (adj): Relating to or undergoing hemimetamorphosis.
  • Hemimetaboly (n): Another term for hemimetamorphosis.
  • Nymph (n): The immature form of an insect that undergoes hemimetamorphosis.
  • Incomplete metamorphosis: A common synonym for hemimetamorphosis.
Synonyms
  • Incomplete metamorphosis
  • Simple metamorphosis
  • Gradual metamorphosis
  • Paurometabolous development (a specific type of hemimetamorphosis where nymphs and adults live in the same habitat)
Antonyms
  • Holometamorphosis (n): Complete metamorphosis, involving distinct larval, pupal, and adult stages.
  • Complete metamorphosis
Related Phrases/Concepts
  • Direct development: A broader term that can include hemimetamorphosis, where there is no radical change in form between juvenile and adult.
  • Metamorphic stages: The series of stages in an insect's life cycle; in hemimetamorphosis, these are egg, nymph (multiple instars), and adult.
Noun
  1. incomplete or partial metamorphosis in insects

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