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Swede Midge

Contarinia nasturtii

About Swede Midge

A minute yellowish-brown gall midge that attacks brassica crops by distorting growing points. Its tiny larvae feed inside developing buds, causing characteristic twisted and swollen growth.

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Did You Know?

It was first detected in North America in 2000 and has since become a major emerging pest of brassica crops.

How to Identify Swede Midge

Swede Midge (Contarinia nasturtii) belongs to the order Diptera, family Cecidomyiidae. Adults typically measure 1.5-2 mm.

Swede Midge Habitat

Swede Midge is found in farmland habitats, particularly across Europe, North America. This species has adapted to thrive in its preferred environment, where it can find suitable food sources and shelter.

Swede Midge Diet and Feeding

Swede Midge induces galls on plants and feeds within them. Gall-making insects trigger abnormal plant growth that provides both food and shelter for their developing larvae.

Where Is Swede Midge Found?

Swede Midge can be found in Europe, North America, where it inhabits farmland environments. Its distribution is influenced by climate, food availability, and habitat suitability.

Distribution Map

Where Swede Midge can be found

Is Swede Midge Dangerous?

Swede Midge is generally harmless to humans. It does not bite or sting and poses no significant health risk. Like most insects, it prefers to avoid human contact and will typically flee rather than confront a perceived threat.

Swede Midge Role in Nature

Swede Midge is part of the food web as a primary consumer, feeding on plant material. It serves as an important food source for birds, bats, amphibians, and other insectivores, connecting plant energy to higher trophic levels.

Seasonal Activity

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Peak activity Moderate Low / dormant

Frequently Asked Questions About Swede Midge

What does Swede Midge look like?

The Swede Midge typically measures 1.5-2 mm.

Where is Swede Midge found?

The Swede Midge is found in Europe, North America and typically inhabits farmland environments.

What does Swede Midge eat?

The Swede Midge induces galls on plants and feeds within them.

Is Swede Midge dangerous to humans?

The Swede Midge is generally harmless to humans. It does not bite or sting and poses no significant health risk.

What is an interesting fact about Swede Midge?

It was first detected in North America in 2000 and has since become a major emerging pest of brassica crops.

Cite This Page

APA:
InsectDiscover. (2026). Swede Midge (Contarinia nasturtii). Retrieved from https://insectdiscover.com/insect/swede-midge

MLA:
"Swede Midge." InsectDiscover, https://insectdiscover.com/insect/swede-midge.