Australian Cockroach (Periplaneta australasiae)

P. australasiae are tropical and sub-tropical species but are also found in ports and shipping areas in temperate climates. Usually found in pet shops, particularly those with large numbers of heated fish tanks, it requires hot, moist conditions to survive.

Identification:
Adult, 30-35mm long; Colour, light brown with ivory-yellow circular band enclosing large, distinct, black spot on Pronotum. Yellow sub marginal stripe at base of forewings.

Biology:
Eggs are encased in an egg capsule (Ootheca). Female drops the egg capsule (Ootheca) shortly after it is formed near a food source, in crevices, on walls, or under workable material such as moist wood, so as to camouflage it. Eggs per capsule: 16-24. Incubation period: 30-40 days. Nymphal period: 6-12 months Nymphs normally moult 10-12 times to reach adulthood. Females may produce 12-30 egg capsules in a lifetime. Egg capsules are completed and dropped at about 10 day intervals. Adult lifespan: up to 8 months.

Control:
Effective treatment depends upon the selection and thorough application of a suitable insecticide gel bait. Many insects and egg cases are well hidden; therefore, the insecticide gel must be placed at and around these harbourages and maintained over the developmental period of the particular species. To control an infestation the insecticide should ideally persist until all egg cases have hatched but continued immigration may demand routine treatments. A high standard of hygiene is important in the control of cockroaches and involves the following components: Deny access to food and water. Deny access to harbourages in buildings or equipment. Practice improved hygiene Monitoring of incoming materials including packaging and laundry.

Products to control Australian Cockroach: