Common Bark Louse

Graphopsocus cruciatus

About Common Bark Louse

A winged bark louse with distinctive cross-shaped wing markings found on tree trunks across Europe. It feeds on algae and lichen on bark.

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Did You Know?

Its cross-shaped wing pattern makes it one of the easiest bark lice to identify.

How to Identify Common Bark Louse

Common Bark Louse (Graphopsocus cruciatus) belongs to the order Psocoptera, family Stenopsocidae. Adults typically measure 3-4 mm.

Common Bark Louse Habitat

Common Bark Louse is found in woodlands 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.

Common Bark Louse Diet and Feeding

Common Bark Louse 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 Common Bark Louse Found?

Common Bark Louse can be found in Europe, North America, where it inhabits woodlands environments. Its distribution is influenced by climate, food availability, and habitat suitability.

Distribution Map

Where Common Bark Louse can be found

Is Common Bark Louse Dangerous?

Common Bark Louse 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.

Common Bark Louse Role in Nature

Common Bark Louse 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 Common Bark Louse

What does Common Bark Louse look like?

The Common Bark Louse typically measures 3-4 mm.

Where is Common Bark Louse found?

The Common Bark Louse is found in Europe, North America and typically inhabits woodlands environments.

What does Common Bark Louse eat?

The Common Bark Louse feeds on wood and bark, often boring into timber.

Is Common Bark Louse dangerous to humans?

The Common Bark Louse is generally harmless to humans. It does not bite or sting and poses no significant health risk.

What is an interesting fact about Common Bark Louse?

Its cross-shaped wing pattern makes it one of the easiest bark lice to identify.

Cite This Page

APA:
InsectDiscover. (2026). Common Bark Louse (Graphopsocus cruciatus). Retrieved from https://insectdiscover.com/insect/common-bark-louse

MLA:
"Common Bark Louse." InsectDiscover, https://insectdiscover.com/insect/common-bark-louse.