Small magpie

The Small magpie (Eurrhypara hortulata) is a moth of the family Crambidae, order Lepidoptera. It is a well-known species in the temperate regions of Europe and Asia, often found in gardens, hedgerows, and moist habitats where its primary host plants thrive throughout the summer months.

The larvae primarily feed on plants from the Lamiaceae and Urticaceae families. Stinging nettle (Urtica dioica) is the most common host, but the larvae are also frequently observed on mint (Mentha), hedge woundwort (Stachys sylvatica), and various white dead-nettles. In agricultural settings, they can occasionally impact herb gardens and specialized crops.

The species undergoes a complete metamorphosis. The adults are nocturnal and easily identified by their distinctively patterned wings with yellow and black-brown markings. The winter is passed in the larval stage; the caterpillars construct silken cocoons, often inside the hollow stems of the host plant or within debris, and pupate during the spring season.

The damage is caused by the caterpillars, which skeletonize the leaves. They feed on the leaf tissue while leaving the veins intact, often spinning leaves together with silk to form protective shelters. Heavy infestations can lead to significant defoliation, which severely reduces the photosynthetic capacity and aesthetic value of the affected plants.

Integrated pest management strategies are essential to keep populations under control:

• Regular monitoring of host plants for signs of webbing or leaf damage.
• Mechanical removal of infested leaves during the early larval stages.
• Clearing weeds and old plant stalks in autumn to destroy overwintering sites.
• Use of targeted microbial insecticides (such as Bacillus thuringiensis) if infestations become severe.