Forest Bug

Pentatoma rufipes · Order: Hemiptera · Family: Pentatomidae

Also called: Red-legged Shieldbug

Damages trees, gardens or crops. Forest bugs can damage fruit and nut trees in gardens and orchards.

Source: Wikipedia

Forest Bug
Photo: Barry Walter, CC BY

The forest bug (Pentatoma rufipes) is a shield bug about 11 to 14 mm long that lives in forests, woodlands, orchards and gardens across most of Europe. Adults appear from July to November, lay eggs on bark or leaves in summer, and the nymphs hatch the following spring. They feed on sap from oaks, alders, hazel, apple, cherry and other deciduous trees, and can become pests of fruit and nut trees.

Source: Wikipedia

How to recognize it

Their bodies are dark brown in autumn and lighter, bronze-colored in summer, with red-orange to cream markings on the tip of the scutellum.

Source: Wikipedia

Is it a pest in the house?

They are considered pests in agriculture and gardens because they feed on fruit and nut trees.

Source: Wikipedia

Where it lives

They are found in forests, woodlands, orchards and gardens.

Source: Wikipedia

What it eats

They pierce plant tissue to suck sap, feeding on a variety of deciduous trees such as oak, alder, hazel, apple and cherry.

Source: Wikipedia

Life cycle

Females lay eggs in summer on bark cracks or leaf tops, and the larvae hatch the next spring.

Source: Wikipedia

When you see it

Adults are present from July through November.

Source: Wikipedia

Where it comes from

The species is common throughout most of Europe.

Source: Wikipedia

More photos

Questions people ask

What trees do forest bugs feed on?

They feed on sap from oaks, alders, hazel, apple, cherry and other deciduous trees.

Source: Wikipedia

When can I see adult forest bugs?

Adults are active from July to November.

Source: Wikipedia

Are forest bugs a problem for my garden?

Yes, they can damage fruit and nut trees in gardens and orchards.

Source: Wikipedia

How big do forest bugs get?

They reach about 11 to 14 mm in length.

Source: Wikipedia

Same family (Pentatomidae)

Sources

  • Wikipedia: https://en.wikipedia.org/wiki/Forest_bug

Look it up elsewhere: GBIF · iNaturalist · BugGuide · Wikipedia

Text written 2026-10-22 from the sources above and checked sentence by sentence against them. Data fetched 2026-10-22.

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