Cellar Spider
Pholcus phalangioides
SpidersSmall-bodied spider with extremely long thin legs. Body about 1/8 inch. Builds irregular webs in corners and basements. Also called daddy long-legs (not true harvestman). Beneficial predator. Shakes web when disturbed.
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 |
|---|---|---|
| Basements | High humidity, cooler temperatures, stored items, potential for flooding, entry point from outside. | Critical |
| Storage Boxes & Clutter | Undisturbed environment, material for nesting, harborage between items, food source (cardboard/paper). | 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 This information may be out of date and should not replace professional judgment, proper training, or required licensing and certifications.