Trapdoor spider
Scientific Name: Ummidia spp.
Order & Family: Araneae, Halonoproctidae
Size: 10 to 30 mm in body length, depending on the species and sex.

Natural Habitat
Typically found in burrows within loose soil, gardens, and woodland floors, often hidden by a camouflaged lid composed of soil and silk.
Diet & Feeding
Carnivorous; primarily feeds on insects and other small invertebrates that wander near the burrow entrance.
Behavior Patterns
Nocturnal ambush predators that live most of their lives in silk-lined underground burrows; males are often seen wandering in the open during mating season while females remain in their burrows.
Risks & Benefits
Generally harmless to humans; while they can bite if provoked, their venom is not considered medically significant. Benefit the ecosystem by controlling insect populations.
Identified on: 6/12/2026