What does chalcid mean?
A chalcid is any of a vast group of very small wasps constituting the superfamily Chalcidoidea, named after the family Chalcididae. Most chalcids are parasitoids: the females lay their eggs inside or on the eggs, larvae, or pupae of other insects, and the developing young consume the host from within. Though often only a few millimetres long, these wasps play an outsized ecological role, keeping populations of flies, moths, beetles, and other pests in check. Because of this, many chalcid species are deliberately bred and released as agents of biological pest control in greenhouses, orchards, and fields, offering farmers an alternative to chemical insecticides. The word belongs chiefly to scientific and agricultural registers, where it commonly appears in phrases such as 'chalcid wasp'. For gardeners and growers alike, chalcids are quiet, almost invisible allies whose work goes largely unnoticed until pest numbers fall.
nounA small wasp belonging to the family Chalcididae or related families, many species of which are parasitic on other insects and are used in the biological control of crop pests.
- A small wasp of the superfamily Chalcidoidea, typically parasitic on other insects and often used for biological pest control.
"The greenhouse grower released chalcids to keep the whitefly population under control."
"The greenhouse grower released chalcids to keep the whitefly population under control."
"Under the microscope, the entomologist identified the tiny specimen as a member of the chalcid group."
Standard English plural, formed by adding -s; used both for individual specimens and when referring to the group collectively.
"Chalcids are among the most widely used natural enemies in commercial greenhouses."
Some of the tiniest wasps on Earth — some smaller than a pinhead — are chalcids, and farmers deploy them as living pest control.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of chalcid
The word 'chalcid' derives from modern Latin Chalcis, the name given to the type genus of the family Chalcididae, which in turn comes from the Greek 'chalkos' (χαλκός), meaning copper or bronze — possibly a reference to a metallic sheen seen in some members of the group. It entered English in the nineteenth century alongside the growth of systematic entomology. The same Greek root gives us scientific terms such as 'chalcolithic' and 'chalcopyrite', and, through Latin borrowing, the everyday word 'copper' itself.
Related word forms
How chalcid is actually used
A technical term used mainly in entomology, agriculture, and horticulture; in general writing it usually appears as part of the phrase 'chalcid wasp'. The term covers a large and diverse group rather than a single species.
Easily confused with chalcid
Calcite is a carbonate mineral, whereas a chalcid is a small parasitic wasp; the two differ by only one letter but share nothing in meaning.