Length: Adult is 22-30 mm (males) 12-20 mm (females)
Colour: Adult is yellowish-chestnut brown
Other Features: The thorax and tegmina are edged in pale coloration. Long antennae.
The Pennsylvania wood roach is normally an outdoor pest but can sometimes be found in homes and cottages. Its diet consists mainly of organic matter, sweet or fermenting substances, and fungi. It hides beneath loose bark, ground litter, in wood piles, stumps and hollow trees. The males of the wood cockroach are strong flyers and are often attracted to lights at night. It is a common species in Central Ontario; noticeable differences in coloration occur from different locations in the province. Egg cases are produced every 5-9 days, releasing 24-30 nymphs. Total life span is one year.