Smokybrown Cockroach
Periplaneta fuliginosa
Scientific illustration for identification purposes
Overview
Smokybrown cockroaches are common outdoor pests in the South that frequently enter homes. Unlike American cockroaches, they lack the yellowish markings on their head. They are strong fliers attracted to lights at night.
How to Identify
- Large size - 1 to 1.5 inches long
- Uniform dark mahogany or black color
- No lighter markings on head (unlike American roach)
- Long wings extending past abdomen
- Strong fliers, especially males
- Long antennae
Behavior
Smokybrown cockroaches are primarily outdoor pests that are strongly attracted to lights at night. They are excellent fliers and often enter homes through gaps, attic vents, and soffits. They require high humidity to survive.
Habitat
Outdoors in tree holes, under bark, in woodpiles, planters, and attics. They prefer the canopy of trees and shrubs. Inside homes, found in attics, soffits, and wall voids.
Diet
Omnivorous, feeding on decaying plant matter, dead insects, and feces. They readily eat pet food left outdoors.
Reproduction
Females produce about 17 oothecae (egg cases) in their lifetime, each containing about 20 eggs. Development from egg to adult takes about 10-14 months.
Distribution in the Southern U.S.
Very common in East Texas, Louisiana, Mississippi, and coastal areas. Less common in drier parts of Oklahoma and West Texas.
Regional Notes
Smokybrown cockroaches are dependent on high humidity and are most problematic in humid Gulf Coast areas. They are often the "roaches flying around porch lights" in the South.
Signs of Infestation
- Large dark roaches flying to lights at night
- Roaches found in attics or upper floors
- Roaches entering through soffits or attic vents
- Droppings and egg cases in attic areas
- Dead roaches near windows or light fixtures
Prevention Tips
- Install screens on attic vents and soffits
- Seal gaps around roofline and eaves
- Use yellow "bug lights" for exterior lighting
- Trim tree branches away from house
- Remove leaf litter and mulch from foundation
- Do not leave pet food outside overnight
When to Contact a Professional
Contact a professional for recurring indoor sightings, especially in upper floors or attics. Professional attic and exterior treatment is often necessary.
Romex Pest Control provides professional smokybrown cockroach control services across Texas, Oklahoma, Louisiana, and Mississippi.
Learn about our smokybrown cockroach control servicesFrequently Asked Questions
Why are smokybrown cockroaches attracted to my house at night?
Smokybrown cockroaches are strongly attracted to lights at night. White and bright lights are most attractive. Using yellow "bug lights" for exterior lighting can reduce their attraction to your home.
How do smokybrown cockroaches get in my house?
They typically enter through gaps around soffits, attic vents, and rooflines since they live in tree canopies. They can also enter through gaps around doors and windows when attracted to lights.
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