American and Australian cockroaches would be the most common large cockroaches encountered by pest managers. But there are plenty of native cockroach species, many of which are found around the house and garden.
Would you be able to identify a shining cockroach?
Common name: Shining Cockroaches
Scientific name(s): Two most common species are Drymaplaneta semivitta and Dryamplaneta communis (4 other Drymaplaneta species in Australia)
Description: Large, native cockroaches with very glossy, dark brown exoskeletons. Nymphs and adults completely wingless. Easily distinguished from nymphs of American cockroach by having white band around the edges of the front half of the body.
Geographic distribution: Common in southern states. Drymaplaneta semivitta accidentally introduced into New Zealand
Habitat: Found under eucalypt bark and in mulched garden beds.
Pest status: Can be common in suitable garden environments, where they can frequently wander into houses. Will eat food scraps if available.
Treatment: If a specific treatment is required, as per American cockroaches
Danield Heald, technician and entomologist.
Images produced with kind permission from Daniel Heald.