Lawn shrimp or terrestrial amphipod

Natural Habitat

Typically found in damp, cool, and dark environments, such as under leaf litter, rocks, logs, mulch, potted plants, and sometimes in basements or bathrooms. They are sensitive to dehydration.

Diet & Feeding

Detritivores, feeding on decaying organic matter, such as dead leaves, wood, and other plant debris. They play a role in decomposition.

Behavior Patterns

Nocturnal; they are active at night when humidity is higher. When disturbed, they often jump or flip their bodies, which is how they get their 'lawn shrimp' common name. They require moist conditions to survive.

Risks & Benefits

Generally harmless to humans and pets, as they do not bite or sting. They are beneficial for breaking down organic matter in gardens and forests, contributing to soil health. However, large indoor infestations can be considered a nuisance, and their presence indoors often indicates excessive moisture.

Identified on: 9/26/2025