Parasitic wasp
Parasitic wasp is a common name for a large, diverse group of wasps that develop as parasitoids on or inside other arthropods, especially insects.
Parasitic wasp is a common name for a large, diverse group of wasps that develop as parasitoids on or inside other arthropods, especially insects. The female lays eggs in, on, or near a host, and the larvae feed on the host and usually kill it. They are widely used in biological pest control and generally do not sting people.
Biology
Parasitic wasps are parasitoids: their immature stages develop on or within a host arthropod. In many species, the adult female uses an ovipositor to place eggs on or in the host, and the developing larvae consume the host before emerging as adults. Adults are often free-living and may feed on nectar or pollen, while the larval stage is parasitic.
Diversity and classification
The name refers to many wasp lineages rather than a single taxonomic group. Sources describe them as a very large, species-rich part of Hymenoptera, with many species still undescribed. They attack many insect groups, including caterpillars, aphids, beetles, flies, and true bugs; some species also target spiders or other arthropods.
Ecological and agricultural importance
These wasps help regulate insect populations and are widely used in pest management. They are especially valuable against crop pests and garden pests, reducing reliance on chemical controls. They are important natural enemies of many insect pests and are widely used in biological control.
Human interactions
Parasitic wasps are generally not a threat to people, pets, or property. They do not form defensive hives like social wasps, and most species do not sting humans. Most parasitic wasps do not sting people and are not considered medically important.
Key facts
- Parasitic wasps are a large and diverse group of parasitoid wasps that require a host to complete development.
- Females typically lay eggs in, on, or near a host insect, and the larvae feed on the host, often causing its death.
- They are important natural enemies of many insect pests and are widely used in biological control.
- Most parasitic wasps do not sting people and are not considered medically important.
- They attack many insect groups, including caterpillars, aphids, beetles, flies, and true bugs; some species also target spiders or other arthropods.
Parasitic wasps are relevant to Canadian agriculture, horticulture, and integrated pest management because they help control insect pests naturally and reduce pesticide use.[1][4][5]
Frequently asked questions
What is a parasitic wasp?
Do parasitic wasps sting people?
What do parasitic wasps eat?
Are parasitic wasps useful?
What kinds of hosts do they use?
References
- University of Minnesota Extension — https://extension.umn.edu/beneficial-insects/parasitoid-waspsSupports: Parasitoid wasps lay eggs inside other insects, are useful in controlling pests, and generally do not sting or bite people.
- University of Maryland Extension — https://extension.umd.edu/resource/parasitoid-waspsSupports: Parasitoid wasps are important biological control agents and do not sting people.
- Michigan State University Extension — https://www.canr.msu.edu/ipm/biocontrol/parasitoidsSupports: Parasitic wasps are the most abundant parasitoids, females lay eggs in or near hosts, larvae feed on hosts, and adults may feed on pollen or nectar.
- Virginia Tech Extension — https://www.pubs.ext.vt.edu/content/dam/pubs_ext_vt_edu/ENTO/ENTO-74/ENTO-345.pdfSupports: Parasitic wasps attack a wide range of insect groups, are generally beneficial in agriculture, and do not attack humans or vertebrate animals.
- Natural History Museum, London — https://www.nhm.ac.uk/discover/body-snatchers-eaten-alive.htmlSupports: Parasitic wasps are common and include at least 6,000 known species in Britain; they lay eggs in eggs, caterpillars, or pupae.