Chafer Beetles

About this pest

Chafer Beetles: Buzzing Buzzkills in South African Gardens

Chafer beetles, with their buzzing flight and colourful patterns, might seem like playful additions to your South African garden. However, these charismatic critters can quickly turn into destructive pests. Let’s explore their world to understand the why and how:

Physical Characteristics:

• Size: Varies depending on species, typically ranging from 10 to 25mm long.
• Colour: Diverse, with some species sporting bright black and yellow patterns, while others are brown, green, or metallic.
• Body: Shiny and hard-shelled, with rounded bodies and prominent antennae.
• Movement: Active during the day, often buzzing around flowers and foliage.

Common South African Names:

• Skittertjies (Afrikaans)
• Kerskewers (Afrikaans) – Christmas beetles
• Blomkewers (Afrikaans) – Flower beetles
• Vrugtekewers (Afrikaans) – Fruit beetles

Why are Chafer Beetles a Pest?

• Adults devour flowers and leaves: They feed on petals, foliage, and fruits, damaging ornamental plants, fruit trees, and vegetables.
• Grubs munch on roots: The larvae, known as white grubs, feed on plant roots, causing growth stunting and wilting.
• Transmission of pathogens: Some species can transmit plant diseases, adding to the potential damage.

Combatting Chafer Beetles:

• Physical barriers: Netting over valuable plants or fruit trees can deter adults.
• Handpicking: Removing adults on sight is effective for small infestations.
• Insecticidal soap spray: Can kill adults on contact, but reapplication might be needed.
• Traps: Yellow traps with lures attract and trap adults.
• Biological control: Milky Spore disease-based products target white grubs in the soil.
• Neem oil spray: Can disrupt adult feeding and reproduction.

Remember:

• Not all chafer beetles are pests. Some species are even beneficial pollinators.
• Prioritize natural and organic methods whenever possible to protect beneficial insects and the environment.
• Early detection and intervention are crucial to prevent major damage from adults and white grubs.

By understanding the chafer beetle and choosing appropriate control methods, you can enjoy their beauty without letting them become uninvited guests in your South African garden.