Blackbeetle

This species is the primary concern for agricultural and horticultural sectors.

In residential settings, two other species are often encountered: Black Ground Beetle ( Carabidae ) blackbeetle

Generally beneficial predators. They eat aphids, slugs, and worms. This species is the primary concern for agricultural

Controlled via insecticide-treated seeds, endophyte-resistant grasses like AR37 , and strategic soil pH management (aiming for pH 6.0). 🏠 Common Household "Black Beetles" and worms. Controlled via insecticide-treated seeds

Shiny black, cylindrical body, roughly 12–15 mm long.

Native to South Africa; now widespread in Australia and the North Island of New Zealand.

Both adults and larvae (C-shaped white grubs) are destructive. Adults chew stems at ground level, while larvae prune plant roots.