Summary
Male southern house spiders have very long legs and a small body but eight eyes in a tight cluster and no violin mark. Females are large, dark, and live in radial silk retreats around windows.
Diagnostic traits
| Trait | Brown Recluse | Southern House Spider |
|---|---|---|
| Eyes | 6 eyes in 3 pairs | 8 eyes in a tight cluster |
| Violin | Present | Absent |
| Leg : body ratio | ≈ 2× | ≈ 3× (males) |
| Retreat | Flat silk sheet in clutter | Radiating silk lines from a hole in masonry |
The bottom line
At-a-glance comparison
| Brown Recluse | Southern House Spider | |
|---|---|---|
| Scientific | Loxosceles reclusa | Kukulcania hibernalis |
| Family | Sicariidae | Filistatidae |
| ♀ body | 7–12 mm | 13–19 mm |
| Leg span | 20–30 mm | 40–50 mm |
| Range | 16 U.S. states | 11 U.S. states |
| Medical | Medically significant | Low |