The Turkestan Cockroach (Blatta lateralis) is male: reddish-brown with cream wing margins; female: dark brown to black with cream markings and typically measures Male: ~1 inch; Female: ~1.25 inches. The Turkestan cockroach (Blatta lateralis) is an invasive species originally from Central Asia that has rapidly established itself throughout the American Southwest, including Arizona. It is now one o.

The Turkestan Cockroach poses a moderate risk. Turkestan cockroaches carry bacteria and pathogens from outdoor environments into homes. They contaminate food and surfaces and contribute to indoor allergen loads. Their rapid spread makes early treatment important.

In Arizona, turkestan cockroachs are most often encountered in the following situations: Reddish-brown male cockroaches flying toward lights at night. Dark female cockroaches found in irrigation boxes, water meter boxes, or around outdoor plumbing. Cockroaches entering the home through gaps around pipes or under doors.

The Turkestan Cockroach is most active during: Year-round outdoors in Arizona; most active in warm months. Arizona's warm desert climate can extend activity periods compared to other states, so year-round vigilance is recommended in the Phoenix metro and surrounding areas.

Seal gaps around outdoor plumbing and utility penetrations. Install door sweeps. Reduce mulch and leaf litter near the foundation. Keep irrigation boxes and water meter boxes treated. Replace white exterior lights with yellow bulbs.

Exterior perimeter treatments with residual insecticides, granular baits in mulch and leaf litter, and treatment of irrigation boxes and utility areas. Entry point sealing is critical.

Cockroaches are nocturnal and highly secretive — seeing even one during the day is often a sign of a larger hidden population. Turkestan Cockroachs reproduce rapidly, so early intervention is critical. Contact Pest Control Bros for a thorough inspection if you spot one.