Surinam cockroach, Pycnoscelus surinamensis
(Blattodea: Blaberidae)

The adult Surinam cockroach is about 3/4 to 1 inch (18-25 mm) long. It is shiny-brown to black with golden markings on the forward edge of each abdominal segment. The pronotum behind the head has a yellow margin along the front edge.

Females produce an average of three egg cases (oothecae) in their lifetime, with each egg case containing 26 eggs. The nymphs appear to be born live as the female retracts the egg case into her body after its formation. Nymphs are dark brown to blackish-brown in color. Developmental time from egg to adult varies from 160 to 220 days. Nymphs go through six molts. Adult females live an average of 307 days.

The Surinam cockroach is a burrowing species that lives outdoors and often infests potted plants. When plants are brought inside, the cockroach infests the premises. Originally from southeastern Asia, it is now found worldwide in tropical areas. In the U.S., it is common in the Gulf states, but is also found in more northern states in greenhouses, planted mall atriums, and other protected areas with plants.

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Adult Surinam cockroach, Pycnoscelus surinamensis.
(Photographer: R.W. Baldwin, University of Florida)

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Adult Surinam cockroach, Pycnoscelus surinamensis.
(Photographer: L.J. Buss, University of Florida)

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