This is the largest cockroach species to infest buildings in Minnesota. Both the adult male and female is about 1-1/2 to 2 inches long, reddish brown and possesses long wings that cover its abdomen (fig. 4). A female typically produces 9 to 10 egg cases which are deposited carefully in a crack or crevice.his is the largest cockroach species to infest buildings in Minnesota. Both the adult male and female is about 1-1/2 to 2 inches long, reddish brown and possesses long wings that cover its abdomen (fig. 4). A female typically produces 9 to 10 egg cases which are deposited carefully in a crack or crevice.