Which of the following is NOT one of the five most common cockroaches in Texas?

The correct answer is based on the fact that "Gray" is not recognized as one of the five most common cockroaches found in Texas. The primary species that are commonly encountered in this region include the German cockroach, American cockroach, Oriental cockroach, along with a few others such as the Brown-banded cockroach and the Smoky-brown cockroach.

The German cockroach is prevalent in homes and businesses, particularly in kitchens and bathrooms due to its preference for warm, moist environments. The American cockroach, often found in sewers, basements, and commercial establishments, is the largest of the common species. The Oriental cockroach is typically found in dark, damp areas and can survive extreme conditions.

In contrast, "Gray" does not correspond to a species that is recognized within the common varieties of cockroaches in Texas, thereby affirming its position as the correct answer to the question. Understanding the prevalent species is crucial for effective pest control and management strategies in the region.