Types of Pill Bugs in Tennessee
Quick Facts About Pill Bugs
Most characteristic of pill bugs is their tendency to roll into a tiny ball when they feel threatened; you probably remember poking at them at some point in your childhood. By far the most common species of this woodlouse in Tennessee is scientifically referred to as Armadillidium vulgare, aka the common pill bug.- Size: About half an inch long (adults)
- Color: Gray to brown
- Shape: Segmented, oval bodies similar to armadillos
- Active Season: Year-round, primarily nocturnal
- Lifespan: 1-2 years
- Reproduction Rate: Females carry eggs in a pouch beneath their bodies
What is a Pill Bug?
The pill bug is considered an isopod, which is a type of arthropod and an order of crustacean. Therefore, these bugs are not technically insects and are rather considered a terrestrial crustacean—related to shrimp, crabs, and lobsters. Introduced to the Americas from Europe, this pest is not native to the United States.
Other common names for the pill bug include:
- Roly-poly
- Slater
- Doodlebug
How Do You Identify the Common Pill Bug?
Often lumped together as one, pill bugs and sow bugs are actually different creatures despite both being isopods and closely resembling each other. The best way to discern between the two is in the pill bug’s nickname: Roly-polies can roll themselves into a ball, whereas sow bugs can’t.
Pill bugs are nocturnal and thus less active during the day, when they can be found hanging around dark, damp, and humid places such as under rocks, logs, or other fallen debris. Pill bugs have segmented bodies and an overall appearance comparable to that of armadillos.
The following are identifying features of pill bugs:
- About half an inch long (adults)
- Gray to brown in color
- Seven pairs of legs (one for each thorax segment)
- One pair of two antennae
- Rolls completely into a ball when disturbed
Related Species
Sow bugs are close relatives to pill bugs, sharing similar habitats and diets. Unlike pill bugs, sow bugs cannot roll into a ball when threatened. Both are commonly referred to as woodlice, though they are distinct creatures with different defense mechanisms. Pill bugs have a more rounded body shape compared to the flatter sow bug.
Property Risks
Pill bugs typically cause minimal damage but can be a nuisance when they appear in large numbers.
- May feed on plant seedlings or roots
- Can cause minor damage to fruits and vegetables that touch the ground
- Primarily feed on decaying organic matter
- Large indoor populations indicate excessive moisture
Where to Look for Pill Bugs
Pill bugs prefer dark, damp, and humid environments. Look for them under rocks, logs, fallen debris, mulch, and other areas that retain moisture. They’re most active at night and tend to hide during daylight hours. Indoors, they may be found in basements, crawl spaces, and other areas with high humidity.
When to Call Professional Help
While pill bugs are generally harmless, a large indoor infestation may indicate moisture problems that need addressing. If you consistently find pill bugs inside your home despite efforts to reduce moisture and seal entry points, it’s time to call for professional assistance.
Tennessee Pill Bug Control and Elimination
Almost anyone with a yard in Tennessee can end up with a pill bug infestation on their hands. Once they find their way in, pill bugs can begin to invade your home and become a nuisance. The experts at U.S. Pest Protection implement the most effective pest control methods for pill bugs, ensuring they’re sealed out from entering your home and kept at bay outside. If pill bugs become a bother, tell them to get rolling and schedule your free inspection today!
