🐝 Ants, Bees & Wasps

Large Square-headed Wasp

Ectemnius cephalotes

About Large Square-headed Wasp

A large solitary wasp that nests in dead wood and provisions its nest with captured flies. Has a distinctively large, square-shaped head. Common in gardens and woodland.

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Did You Know?

Nests in old beetle holes in dead wood, stocking each cell with paralyzed flies for its developing larvae.

How to Identify Large Square-headed Wasp

Large Square-headed Wasp (Ectemnius cephalotes) belongs to the order Hymenoptera, family Crabronidae. Adults typically measure 12-18 mm.

Large Square-headed Wasp Habitat

Large Square-headed Wasp is found in woodlands habitats, particularly across Europe. This species has adapted to thrive in its preferred environment, where it can find suitable food sources and shelter.

Large Square-headed Wasp Diet and Feeding

Large Square-headed Wasp feeds on wood and bark, often boring into timber. Wood-feeding insects contribute to the decomposition of dead trees and nutrient cycling in forest ecosystems.

Where Is Large Square-headed Wasp Found?

Large Square-headed Wasp can be found in Europe, where it inhabits woodlands environments. Its distribution is influenced by climate, food availability, and habitat suitability.

Distribution Map

Where Large Square-headed Wasp can be found

Is Large Square-headed Wasp Dangerous?

Large Square-headed Wasp belongs to the order Hymenoptera, which includes many stinging insects. While not typically aggressive, it may sting if threatened or handled. Stings can cause pain and swelling, and in rare cases may trigger allergic reactions in sensitive individuals.

Large Square-headed Wasp Role in Nature

Large Square-headed Wasp 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 Large Square-headed Wasp

What does Large Square-headed Wasp look like?

The Large Square-headed Wasp typically measures 12-18 mm.

Where is Large Square-headed Wasp found?

The Large Square-headed Wasp is found in Europe and typically inhabits woodlands environments.

What does Large Square-headed Wasp eat?

The Large Square-headed Wasp feeds on wood and bark, often boring into timber.

Is Large Square-headed Wasp dangerous to humans?

The Large Square-headed Wasp belongs to the order Hymenoptera, which includes stinging insects. While not typically aggressive, it may sting if threatened or handled.

What is an interesting fact about Large Square-headed Wasp?

Nests in old beetle holes in dead wood, stocking each cell with paralyzed flies for its developing larvae.

Cite This Page

APA:
InsectDiscover. (2026). Large Square-headed Wasp (Ectemnius cephalotes). Retrieved from https://insectdiscover.com/insect/large-square-headed-wasp

MLA:
"Large Square-headed Wasp." InsectDiscover, https://insectdiscover.com/insect/large-square-headed-wasp.