African Black Beetle
Heteronychus arator
An introduced, shiny black scarab beetle whose larvae are a common type of curl grub. Adults also chew grass at the base and are drawn to lights.
- Size
- 12–15 mm
- Colour
- Shiny black
- Larvae
- Curl grubs
- Introduced
- Yes, from Africa
Questions about the African Black Beetle
How to identify a African Black Beetle
Identification
- Adults about 12–15 mm, shiny black, oval and robust.
- Larvae are typical C-shaped curl grubs.
Where it lives
- Lawns, pastures and garden beds; adults often found around outdoor lights and in pools.
Behaviour
- Adults fly on warm evenings in spring and autumn.
- Both adults and larvae damage grass, the adults by chewing stems at soil level.
Why it matters
Large numbers of beetles at lights or in pools are an early warning that curl grubs may follow in the lawn.
Commonly confused with
More questions about lawn pests
All lawn pest questions →Other lawn pest species
Lawn pest guides
Common Brisbane Household Pests
A Brisbane-specific overview of the pests residents meet most often, when they are active, and what the subtropical climate, storms, creeks and Queenslander homes mean for pest pressure.
GuideUnderstanding Pest Activity After Rain
Why storms and wet weather bring cockroaches, ants, mosquitoes and spiders into homes, what to expect in the days and weeks afterwards, and what to do before and after rain and floods.
Lawn Pests by location
More about lawn pests
Lawn Pests
Caterpillars and beetle larvae that eat grass leaves or roots, leaving brown, dying patches. Armyworm and curl grubs cause most lawn damage in eastern Australia, especially in warm, humid months.
Still have a question?
Ask PestMan. We’ll show you any answers we already have — and if we don’t have one yet, your question helps decide what we answer next.
Sources & further reading
- Queensland Museum — insects, spiders and animals of Queensland — Queensland Museum
- CSIRO — insect and pest research — CSIRO
PestMan provides general information only and does not replace licensed pest-management, medical, veterinary or structural advice. Always read and follow product labels. Read our disclaimer.