Surinam Cockroach

Surinam Cockroach (Pycnoscelus surinamensis) A winged female Surinam Cockroach

Pycnoscelus surinamensis

Biology

These cockroaches are common in compost heaps and leaf litter in gardens where they break down organic material. Wingless females are most common. Females produce live young without mating by parthenogenesis. Winged males are rarely found. Introduced to Australia. Occurs in the humid tropics world-wide.

Identification

Length 18 mm. The body is stout and broadly oval and the legs short and adapted for burrowing. Adults occur in winged and wingless forms.

Surinam Cockroach (Pycnoscelus surinamensis) A wingless female Surinam Cockroach

Wingless females are shiny black with the last few segments of the abdomen dull and matt. Winged females and males have brown fore wings with paler edges and a black thorax with a pale front edge. This species belongs to the Family Blaberidae.

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