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Leaf miner Coleophora spiraeella

Description

Leaf miner Coleophora spiraeella is a small moth belonging to the family Coleophoridae. It is found in Central and Southern Europe, from Germany and Poland to Italy, Slovenia, and Romania. The wingspan of adults ranges between 9–12 mm. Larvae of this species create characteristic cases and mines on leaves of plants from the Rosaceae family, particularly on Spiraea species such as Spiraea x vanhouttei, Spiraea japonica, and Spiraea media. The larvae feed on leaf tissue from June to September and overwinter fully developed in their cases.

The feeding activity results in visible mines on leaves, where larvae consume internal tissues, forming brownish, irregular spots. Affected plants experience reduced aesthetic value due to damaged and discolored leaves. In cases of higher larval abundance, C. spiraeella can weaken shoots and overall plant vitality, particularly in urban green spaces and ornamental gardens.

Symptom

On infested Spiraea plants, leaves exhibit irregular brownish mines, mainly on the upper surface. Small holes may appear where larvae exit. Dark brown cases can be attached to the mined leaves.

Tree Species: Spirea spp.

Part of a plant- attacked: Leaf / Needle

Pest significance: Less harmful

Pest Category: Insects

Invasive Species: No

Present in EU: Yes