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Nymphs - will hatch and pass through 5-7 moults before reaching maturity. This is hugely influenced by temperature. |
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Adults - emerge between 2 ½ months and 6 months later usually living for around 6 months. |
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| Habits & Behaviour |
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Being nocturnal they hide in the cracks and crevices around sinks, cookers and motor compartments of house hold appliances. |
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They can scale rough and smooth surfaces. |
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Mostly found in the heated areas of buildings such as kitchens and boiler rooms as they need high temperatures for optimum breeding. |
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Being omnivorous they scavenge for organic material. |
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They also need to be near a water source for regular drinking. |
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Cockroaches are very common in commercial premises associated with the production or handling of food. |
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Egg cases or adults can be transported into your premises on incoming crates, packaging and laundry. |
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Oriental Cockroach
Appearance: |
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Adults - 17 - 30 mm long |
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Their colour is a dark brown almost shiny black. |
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Head tucked beneath pronotum, long antennae and spiny legs with 2 anal cerci. |
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It is dangerous to swat a wasp near its nest site or to attempt to remove the nest yourself, as wasps can sting repeatedly. |
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The wings are undeveloped in female but on the male they cover two-thirds of his abdomen. |
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| Lifecycle: |
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Eggs - ootheca (around 5 laid at intervals by female) each contain on average 16 eggs. |
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These are deposited when they are fully formed in harbourages. Incubation is 6 - 12 weeks later dependent on temperature. |
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Nymphs - progress through 7-10 moults before reaching maturity. Developing into adults may take up to 18 months. |
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Adults - can live up to 6 months. |
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| Habits & Behaviour: |
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Cockroaches are very common in commercial premises associated with the production or handling of food. |
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Egg cases or adults can be transported into your premises on incoming crates, packaging and laundry. |
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They can survive lower temperatures than other cockroaches so can also be found outdoors. |
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Mostly found less cooler, less humid areas such as basements and drains. |
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Oriental cockroaches can climb rough but not smooth vertical surfaces. |
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| Important |
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Can spread various human diseases by walking over food and preparation areas. |
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Omnivorous they can survive for longs periods of time on a limited food source. |
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Being nocturnal could mean you do not notice them during the day. |
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