Which of the following is a common characteristic of Oriental cockroaches?

The characteristic that Oriental cockroaches are dark brown to black in color is a definitive and distinguishing trait of this species. Being identified by their coloration helps in correctly categorizing them and understanding their identification in the field. This dark hue, coupled with their somewhat shiny appearance, sets them apart visually from other cockroach species that may exhibit lighter colors or different patterns.

The other attributes listed are less accurate for Oriental cockroaches; for example, they are not strong fliers and tend to prefer cooler, moist environments rather than warm, dry ones. They are often found indoors in places that provide moisture, such as basements and kitchens, rather than predominantly outdoors. Focusing on their specific color and physical traits is essential for accurate identification and effective pest management strategies.