Aceria kuko

Goji berry gall mite

Description

Aceria kuko, also known as the Goji berry gall mite, is a tiny eriophyid mite that infests primarily Lycium chinense (Chinese wolfberry) and Lycium barbarum (common goji), both valued for their berries. This mite, originally from Asia, has spread to several European countries, including the Czech Republic and Hungary, likely due to increased demand for goji plants. Aceria kuko feeds by sucking plant sap, causing the formation of small, rounded galls on leaves. Although infestations are generally low in economic impact, they can affect the aesthetic appearance of ornamental plants, especially in gardens and parks. The mite thrives in warm climates and can produce multiple overlapping generations each year. At high population densities, these gall mites can cause significant plant damage, leading to increased gall formation and visible distortion of affected areas. At high population densities, these gall mites can cause significant plant damage, which may lead to reduced yields.

Symptom

Galls appear as small, rounded swellings on leaves (possibly others non wooded parts). They may vary in color from green to reddish-brown and distort the affected areas, giving them an irregular, unsightly appearance.

Tree Species: Goji berry

Part of a plant- attacked: Leaf / Needle

Pest significance: Less harmful

Pest Category: Mites

Invasive Species: Yes

Present in EU: Yes