german cockroaches
american cockroaches

Months of Activity: June - September

Cockroaches generally live in moist areas, but can survive in dry areas if they have access to water. They prefer warm temperatures around 29°C and do not tolerate cold temperatures. In residential areas, these cockroaches live in cellars and sewers.

A scavenging pest, cockroaches feed on decaying organic matter and a variety of other foods. They are particularly fond of fermenting foods. They can travel quickly, often darting out of sight when someone enters a room, and can fit into small cracks and under doors despite being fairly large in size. Cockroaches are considered one of the fastest running insects.

Appearance

  • American cockroaches are a shiny reddish brown and have a yellowish margin on the body region behind the head. The adults grow to an average length of between 28mm-44mm and are about 7mm tall.
  • Brown-banded cockroaches have a dark brownish body crossed by two distinctive lighter bands. The adults grow to between 10mm-15mm in length.
  • German cockroaches have a brown body with two darker stripes across their thorax. The adults grow to between 12mm-15mm long.
  • Oriental cockroaches are dark brown to black in colour and will run rather than fly. The adults grow to between 25mm-30mm in length.

Lifecycle

Females produce an egg case called an ootheca which protrudes from the tip of the abdomen. Between 6-20 eggs are contained inside the ootheca. After about two days being carried by the female, the egg cases are placed on a surface in a safe location. Egg cases are about 0.9cm long, brown, and purse shaped.

Immature cockroaches emerge from the egg case in 6 to 8 weeks and require 3 to 12 months to mature. Adult cockroaches can live up to one year, during which females produce an average of 150 young.

Cockroaches page content courtesy of Pest Control UK

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