πŸ¦‹ Butterflies & Moths

Spruce Budworm

Choristoneura fumiferana

About Spruce Budworm

A small mottled grey-brown moth that is the most destructive forest pest in North America. Outbreaks can kill millions of hectares of spruce and fir forest.

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Did You Know?

A single outbreak in the 1970s-80s damaged more timber than all forest fires in Canada combined.

How to Identify Spruce Budworm

Spruce Budworm (Choristoneura fumiferana) belongs to the order Lepidoptera, family Tortricidae. Adults typically measure 20-28 mm wingspan.

Spruce Budworm Habitat

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

Spruce Budworm Diet and Feeding

Spruce Budworm has an omnivorous diet, feeding on both plant and animal matter. This dietary flexibility allows it to exploit a wide range of food sources in its environment.

Where Is Spruce Budworm Found?

Spruce Budworm can be found in North America, where it inhabits forests environments. Its distribution is influenced by climate, food availability, and habitat suitability.

Distribution Map

Where Spruce Budworm can be found

Is Spruce Budworm Dangerous?

Spruce Budworm 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.

Spruce Budworm Role in Nature

Spruce Budworm plays a role in its ecosystem as part of the food web, serving as both consumer and prey. Insects like Spruce Budworm are a vital food source for birds, bats, and other wildlife, and contribute to the overall health and balance of their environment.

Seasonal Activity

Jan
Feb
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Dec
Peak activity Moderate Low / dormant

Frequently Asked Questions About Spruce Budworm

What does Spruce Budworm look like?

The Spruce Budworm typically measures 20-28 mm wingspan.

Where is Spruce Budworm found?

The Spruce Budworm is found in North America and typically inhabits forests environments.

What does Spruce Budworm eat?

The Spruce Budworm has an omnivorous diet, feeding on both plant and animal matter.

Is Spruce Budworm dangerous to humans?

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

What is an interesting fact about Spruce Budworm?

A single outbreak in the 1970s-80s damaged more timber than all forest fires in Canada combined.

Cite This Page

APA:
InsectDiscover. (2026). Spruce Budworm (Choristoneura fumiferana). Retrieved from https://insectdiscover.com/insect/spruce-budworm

MLA:
"Spruce Budworm." InsectDiscover, https://insectdiscover.com/insect/spruce-budworm.