Sallow Pea-gall Sawfly

Euura pedunculi · Order: Hymenoptera · Family: Tenthredinidae

No source yet on danger. We have no source yet on whether it bites, stings or damages anything.
Sallow Pea-gall Sawfly
Photo: Michel Langeveld, CC BY

The gall can be green or yellow, sometimes with a red flush, and may have warts and hairs of varying density. Galls form on the underside of willow leaves and the insect is found across most of Europe to Finland and east to Sakhalin.

Source: Wikipedia

How to recognize it

Galls are green or yellow, occasionally reddish, and can be warted and hairy.

Source: Wikipedia

Where it lives

Galls appear on the underside of the host plant’s leaf.

Source: Wikipedia

More photos

Sallow Pea-gall Sawfly photo 3
Photo: Owen and Carol Fawcett., CC BY

Same family (Tenthredinidae)

Willow Apple Gall SawflyWillow Apple Gall SawflyEuura californicaTurnip SawflyTurnip SawflyAthalia rosaeNuisance, not dangerousWillow Redgall SawflyWillow Redgall SawflyEuura proximaYellow-spotted MacrophyaYellow-spotted MacrophyaMacrophya montanaDamages trees, gardens or cropsSaddleback Grass-cutterSaddleback Grass-cutterEutomostethus ephippiumDamages trees, gardens or cropsCherry Slug SawflyCherry Slug SawflyCaliroa cerasi

Sources

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

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

Text written 2026-10-23 from the sources above and checked sentence by sentence against them. Data fetched 2026-10-23.

How this page works

This is one bug's fact sheet. The colored box at the top says whether it is dangerous. Sections below cover how to recognize it, whether it is a pest, and how to deal with it. The US map shows which states have records; tap a state to see other bugs there.

Every fact on Bug FAQ comes from a named source (university extension sites, government agencies, GBIF, iNaturalist, Wikipedia). The source is linked next to each section. If we have no source for something, we leave it out.