
Community identification
Lawn Shrimp or Terrestrial Amphipod
Arcitalitrus sylvaticus
- Order & Family
- Order: Amphipoda, Family: Talitridae
- Size
- 5 mm to 20 mm in length
Natural Habitat
Damp soil, leaf litter, and mulch; often found in garden flower beds or under potted plants. They may enter homes during heavy rains or drought to find moisture.
Diet & Feeding
Scavengers that feed on decaying organic matter and soft plant tissue (detrivores).
Behavior Patterns
They are primarily nocturnal and require high moisture levels to survive, as they lack a waxy cuticle to prevent desiccation. They are known for hopping when disturbed. Once they enter a dry indoor environment, they quickly dehydrate and die, often turning a reddish-pink color.
Risks & Benefits
They are harmless to humans, pets, and structures. They do not bite or sting. In the ecosystem, they are beneficial as decomposers that help recycle nutrients into the soil.