Cockroach (Native Bush) Celatoblatta spp,

Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Subclass: Pterygota
Infraclass: Neoptera
Superorder: Dictyoptera
Order: Blattodea
Family: Blattidae
Species: Celatoblatta(about 16 species)
Common name: Native Bush Cockroach,

These small cockroaches are NZ natives. They are found in logs and leaf litter, under loose bark. Most of the species favours damp, dark habitats. They are not a household pest. They are usually introduced into a house usually by firewood. They are omnivorous and may feed on all sorts of organic materials. They can even eat dead wood, which they digest with the help of symbiotic gut flora.
The species Celatoblatta quinquemaculata can be found under slabs of rock in the subalpine and alpine regions of New Zealand. It is unusual because it survives through freezing conditions by allowing the water within its body to freeze and as temperature rises they become active.

Photos of Celatoblatta species

Cockroach Celatoblatta species Native Bush .JPG Native cockroach Celatoblatta spp..JPG

Native cockroach Celatoblatta spp.-001.JPG

Native cockroach Celatoblatta spp.-003.JPG

Celatoblatta species Native Bush cockroach.JPG 
Celatoblatta species Native cockroach.JPG

Juvenile Bush Cockroach
Native Bush Cockroach Celatoblatta species.JPG

Native bush cockroach Celatoblatta spp..JPG

Celatoblatta species native-005.JPG

Viviparous Celatoblatta species of cockroach give birth to live young.
Viviparous cockroach give birth to live young.JPG

Cockroach egg cases,  Most look rather old and are deteriorating, some perhaps chewed by a predator.
Cockroach egg cases genus Celatoblatta-001.JPG

Photo of wood lice (Porcellio scaber) and cockroach egg cases to show their comparative size.
Cockroach egg cases genus Celatoblatta.JPG

Thanks to Wikipedia for text and information: