black vine beetle
Otiorhynchus sulcatus
This description was machine-translated.
How to spot it
You will find that the black vine beetle is a nocturnal, flightless beetle whose adults carve characteristic crescent‑shaped gouges into leaf edges.
The larvae are more dangerous: they live in the soil and eat roots and root collars, so especially strawberries and blueberries wilt suddenly or die completely. Infestation is often only noticed when the plant is already stressed.
Prevention
You start in summer on moist, warm soil, applying insecticidal nematodes (Heterorhabditis) against the larvae, this is the most effective biological method. You collect beetles in the evening with a flashlight or lay boards and rolled‑up terracotta pots as daytime shelters, which you check in the morning. You inspect purchased potted plants before transplanting for larvae in the soil.
Affected plants
These plants in our database are especially susceptible.
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