Grass Spider

Scientific Name: Agelenopsis ssp.

Order & Family: Araneae: Agelenidae

Size: Body length 10-20 mm; females are typically larger than males.

Grass Spider

Natural Habitat

Commonly found in low shrubs, tall grass, and around building foundations where they build funnel-shaped webs.

Diet & Feeding

Carnivorous; they feed on various small insects that land on their non-sticky funnel webs.

Behavior Patterns

They are lightning-fast runners that hide in the tube of their funnel web until they detect vibrations from prey. They do not use sticky silk to trap prey, relying instead on speed.

Risks & Benefits

Benefits the ecosystem by controlling insect populations. They are not aggressive towards humans; their venom is not medically significant, and their chelicerae are often too small to easily pierce human skin.

Identified on: 4/2/2026