About Birch Catkin Bug
A small, oval brown seed bug that feeds on birch and alder catkins. It is very common in northern Europe and can form large swarms in autumn. It sometimes enters buildings in large numbers seeking overwintering shelter.
Did You Know?
In autumn, enormous swarms of thousands can descend on buildings near birch trees, alarming homeowners despite the bugs being completely harmless.
How to Identify Birch Catkin Bug
Birch Catkin Bug (Kleidocerys resedae) belongs to the order Hemiptera, family Lygaeidae. Adults typically measure 4-5 mm.
Birch Catkin Bug Habitat
Birch Catkin Bug is found in woodlands habitats, particularly across Europe, northern Asia, North America. This species has adapted to thrive in its preferred environment, where it can find suitable food sources and shelter.
Birch Catkin Bug Diet and Feeding
Birch Catkin Bug feeds on seeds and grains. Seed-feeding insects can influence plant populations by consuming seeds, and some play a role in seed dispersal.
Where Is Birch Catkin Bug Found?
Birch Catkin Bug can be found in Europe, northern Asia, North America, where it inhabits woodlands environments. Its distribution is influenced by climate, food availability, and habitat suitability.
Distribution Map
Where Birch Catkin Bug can be found
Is Birch Catkin Bug Dangerous?
Birch Catkin Bug 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.
Birch Catkin Bug Role in Nature
Birch Catkin Bug 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
Frequently Asked Questions About Birch Catkin Bug
What does Birch Catkin Bug look like?
The Birch Catkin Bug typically measures 4-5 mm.
Where is Birch Catkin Bug found?
The Birch Catkin Bug is found in Europe, northern Asia, North America and typically inhabits woodlands environments.
What does Birch Catkin Bug eat?
The Birch Catkin Bug feeds on seeds and grains.
Is Birch Catkin Bug dangerous to humans?
The Birch Catkin Bug is generally harmless to humans. It does not bite or sting and poses no significant health risk.
What is an interesting fact about Birch Catkin Bug?
In autumn, enormous swarms of thousands can descend on buildings near birch trees, alarming homeowners despite the bugs being completely harmless.
Cite This Page
APA:
InsectDiscover. (2026). Birch Catkin Bug (Kleidocerys resedae). Retrieved from https://insectdiscover.com/insect/birch-catkin-bug
MLA:
"Birch Catkin Bug." InsectDiscover, https://insectdiscover.com/insect/birch-catkin-bug.