---
title: "Knopper Gall Wasp"
description: "Andricus quercuscalicis — Insectos y arañas. Andricus quercuscalicis is a gall wasp species inducing knopper galls."
canonical: https://animalchecklist.com/es/animal/knopper-gall-wasp
last_updated: 2026-09-20
---

# Knopper Gall Wasp

> Andricus quercuscalicis — Insectos y arañas. Andricus quercuscalicis is a gall wasp species inducing knopper galls.

- Scientific name: *Andricus quercuscalicis*
- Category: `insects` (Insectos y arañas)
- Habitats: `forest` (Bosque)
- iNaturalist observations: 8248
- Wikidata: [Q4759305](https://www.wikidata.org/wiki/Q4759305)
- iNaturalist taxon: [127732](https://www.inaturalist.org/taxa/127732)

## Names

- en: Knopper Gall Wasp
- de: Knopperngallwespe
- nl: Knoppergalwesp
- pl: Letyniec żołędziowiec

## Countries with the most observations

GB (5219), DE (467), IT (405), FR (366), AT (326), CZ (245), HU (177), NL (165), DK (145), SK (112), RO (52), IE (49)

## Summary

Andricus quercuscalicis is a gall wasp species inducing knopper galls.
Knopper galls develop as a chemically induced distortion of growing acorns on pedunculate oak (Quercus robur L.) trees, caused by gall wasps, which lay eggs in buds with their ovipositor. The gall thus produced can greatly reduce the fecundity of the oak host, making this gall potentially more of a threat to the reproductive ability of the tree than those that develop on leaves, buds, stems, etc.

Text: Wikipedia (en), CC BY-SA 4.0 — https://en.wikipedia.org/wiki/Andricus_quercuscalicis

## Photo

![Knopper Gall Wasp](https://animalchecklist.com/img/animals/knopper-gall-wasp/medium.jpg)

Photo: Stephen James McWilliam · CC0 · inaturalist — https://www.inaturalist.org/observations/32151609

## Machine access

`GET https://animalchecklist.com/api/v1/animals/knopper-gall-wasp?lang=es` — see [openapi.json](https://animalchecklist.com/openapi.json).