Orthopteroid Insects
Cockroach Biology
Australian Cockroach
Common Methana
U-marked Methana
Pale Woodland  Cockroach
Oval Woodland Cockroach
Black Woodland Cockroach
Reddish-brown Cockroach
White-tailed Cockroach
Austral Ellipsidion
Small Ellipsidion
See-through Ellipsidion
Beautiful Ellipsidion
Balta Cockroach 1
Balta Cockroach 2
Balta Cockroach 3
Orange-brown Cockroach
Shelford's Cockroach
Surinam Cockroach
Bark cockroach
Mottled Cockroach
Wood Cockroach


Surinam cockroach - Pycnoscelus surinamensis

Family Blaberidae

This page contains pictures and information about the Surinam Cockroaches that we found in the Brisbane area, Queensland, Australia.

Body length 25mm
We sometimes find this dark brown cockroach wandering on grass during day time and night time. They are active at night. They are uniformly mahogany brown to dark brown without any pattern. They could be abundant outdoors in tree holes and wood logs. They prefers moist, dark and warm area. 
Surinam Cockroach is the only cockroach known to reproduce parthenogentically, i.e., females produce females without the males.
If we check under rocks in the garden where the adults are found then the nymphs are usually there as well, particularly if we rake thru' the soil and look for shiny shapes.  
The nymphs are burrowers and are shiny black with the last few abdominal segments matt. They also have almost hidden cerci.  
This is an introduced species.
PC9_1462a.jpg (248787 bytes) PC9_1463.jpg (327618 bytes)

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Last updated: May 06, 2011.