You can distinguish this variety of roach by looking for two lighter bands of brown that run across its back. Brown-banded cockroaches are usually ½” in length and they have ovular bodies, with two antenna and six legs.
Blattella germanica (Linnaeus)
Of all of the species of cockroaches, the German cockroach is the most common in the United States. They’re easily recognizable by their light brown bodies which have two prominent bands of dark brown running lengthwise down the back.
Periplaneta americana (L.)
When people think cockroach, they usually picture the American cockroach. These reddish-brown insects can be identified by a distinct yellow figure-8 on the back of their heads.