oriental Cockroach (Blatella germanica)

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Appearance - Dark brown or black in colour.  20 -25mm long.  The wings undeveloped in female and cover ¾ length of the abdomen in the male.

Lifecycle

Females deposit 16 eggs in an ootheca (egg case).
Hatch in 2 months.
Nymphs take 6-18 months to develop into adults.

Habits

Highly adapted for surviving in the natural environment, Oriental cockroaches thrive in cool, damp areas such as basements, drains and openings beneath porches.
Known for their preference for feeding on garbage and decay, these insects can most commonly be found in rubbish tips and leaf litters.  Runs rather than flies.


Threat


Notorious for giving off a pungent and unpleasant odor, Oriental cockroaches also unwittingly spread hazardous bacteria picked up from the unsanitary surfaces on which the insects crawl. Oriental cockroaches regularly live in and crawl through sewage and other filth containing disease-causing organisms. When the insects infest homes and other occupied buildings, they frequently transfer the bacteria and viruses from their legs to food, dishes and utensils, countertops, and other objects used and consumed by humans. The most common diseases spread by Oriental cockroaches include dysentery and food poisoning.