28/08/2026
🪳 PEST SPOTLIGHT #9 – Gisborne Cockroach (Drymaplaneta semivitta)
Spotted a big cockroach around the house? Before assuming you have a serious indoor infestation, take a closer look – it may be a Gisborne cockroach.
🌏 Origin
The Gisborne cockroach is native to Australia and was first recorded in New Zealand at Gisborne.
📏 Size & Appearance
• Around 20–30 mm long
• Dark brown body
• Noticeably larger than a German cockroach
• Wingless
🌿 Where do they live?
Gisborne cockroaches are strongly associated with outdoor environments and are often found:
🪵 Around timber
🌳 Beneath bark
🍂 In bark chips and garden material
🏡 Around sheltered areas outside buildings
They do sometimes wander indoors, which is usually when homeowners notice them.
⚠️ Does finding one mean your kitchen is infested?
Not necessarily. Unlike German cockroaches, Gisborne cockroaches do not usually establish infestations around stored food inside homes.
💡 Did you know?
This species was named after the New Zealand location where it was first recorded – but it actually originated in Australia.
🔎 Cockroach identification matters.
Different cockroach species behave very differently, so correct identification is important before deciding what treatment is required.
📞 Elite Pest Control
Protecting Canterbury homes and businesses from unwanted pests.