Black Widow Spider
Latrodectus mactans
SpidersShiny black spider with red hourglass marking on underside of abdomen. Females are venomous with neurotoxic bite. Body about 1/2 inch. Builds irregular webs in protected areas. Males and juveniles have different markings.
Control Methods
Recommended methods for controlling this pest
| Method | Type | Effectiveness | Requirements |
|---|---|---|---|
| Crack and Crevice Aerosol | Chemical | Required |
Common Harborage Locations
Where to find this pest during inspections
| Location | Why Found There | Priority |
|---|---|---|
| Firewood Piles | Moisture retention, bark provides food and shelter, direct contact with ground, proximity to structure. | High |
| Stored Lumber | Wood-destroying pests consume material, protection from weather, often in contact with soil. | Medium |
| Outdoor Rocks & Debris | Scorpions hide under objects during day, emerge at night to hunt. Cool, moist environment under rocks. Protection from predators and sun. | Medium |
Important Disclaimer: The information provided in this knowledge base is for educational and reference purposes only. Pest management professionals should always consult current product labels, Safety Data Sheets (SDS), manufacturer instructions, and applicable local, state, and federal regulations as the definitive source of truth. Product formulations, application methods, safety requirements, and regulations may change over time. This information may be out of date and should not replace professional judgment, proper training, or required licensing and certifications.