Definition

1. Noun:
   • A type of parasitic wasp: An ichneumon fly is a slender, wasp-like insect belonging to the family Ichneumonidae within the order Hymenoptera. Its larvae are internal parasites, feeding on and eventually killing other insects, particularly caterpillars and the larvae of other insects.

Examples of Usage

• Noun:
  • The gardener identified the ichneumon fly as a beneficial insect for controlling pest populations.
  • An ichneumon fly uses its long ovipositor to lay eggs inside a host caterpillar.

Advanced Usage

• In biological control: The term is often used in entomology and agriculture to describe a natural predator used for pest management.
  • Farmers encourage ichneumon flies as a form of integrated pest management.

Variants and Related Words

• Ichneumon wasp: A more common alternative name for the same insect.
• Ichneumonid (noun): A member of the Ichneumonidae family.
• Parasitoid (noun): A broader biological term for an organism, like the ichneumon fly, that lives in or on a host during its larval stage, ultimately killing it.

Synonyms

• Parasitic wasp: A general term for wasps whose larvae are parasites of other arthropods.

Notes on Meaning

• Not a true fly: Despite the name "fly," it is not a member of the order Diptera (true flies like houseflies). It is a wasp.
• Beneficial parasite: While parasitic, it is generally considered beneficial to humans as it helps control populations of herbivorous insects that damage crops.

Noun

1. hymenopterous insect that resembles a wasp and whose larvae are parasitic on caterpillars and other insect larvae