This is one of the larger roach species with adults growing up to 1½ inches in length.
The smoky brown cockroach is solid dark brown and has fully developed wings that extend past the tip of the abdomen.
The smoky brown cockroach is a nocturnal insect that typically lives outdoors; hiding under vegetation and yard debris, heavy mulch layers and thick leaf litter. These cockroaches are extremely common in Texas and Louisiana where they have also become an indoor problem.
These cockroaches prefer to eat plants and are therefore often a pest in greenhouses, nurseries and gardens.
The smoky brown cockroach's egg capsule is large and brown and the female glues it into cracks and crevices where it will be hidden from view. The capsule contains about 24 eggs which hatch in 45 days. Once hatched, the nymphs take six to twelve months to develop.
Smoky brown cockroaches lose moisture through their cuticle, and therefore prefer damp, dark and poorly ventilated environments.
Proper identification is key when treating and roach infestation.