Terrestrial-amphipod
Guides
Arcitalitrus
Lawn Shrimps, Beach Hoppers
Arcitalitrus is a genus of fully terrestrial amphipods commonly known as lawn shrimps or beach hoppers. The genus contains nine described species native to Australasia, with Arcitalitrus dorrieni and A. sylvaticus introduced to Europe and elsewhere through human activity. These crustaceans have adapted to life away from aquatic environments, inhabiting forest leaf litter and soil. Some species have become invasive outside their native range, spreading via the international plant trade.
Arcitalitrus sylvaticus
lawn shrimp, lawn prawn, landhopper
Arcitalitrus sylvaticus is a terrestrial amphipod native to Australia and nearby Pacific regions. It has been introduced to California, New Zealand, North Carolina, and Florida, with the first California record in 1967. The species is highly sensitive to moisture conditions, perishing in dry environments and drowning in saturated soils. It serves as a significant primary decomposer of leaf litter in its habitat.
Talitroides
landhopper, lawn shrimp
Talitroides is a genus of terrestrial amphipod crustaceans commonly known as landhoppers or lawn shrimp. These small, laterally compressed crustaceans have adapted to life on land, inhabiting moist soil and leaf litter in forested environments. Several species have been introduced outside their native ranges and have become established in new regions, including T. topitotum in Brazil and Hong Kong. The genus has been documented in mosquito surveillance bycatch studies and ecological research on soil fauna.
Talitroides alluaudi
Alluaudi's landhopper
A terrestrial amphipod (landhopper) native to the Atlantic forests of southeastern Brazil, now distributed worldwide through synanthropic human-mediated dispersal. Found in leaf litter of tropical and subtropical forests, urban parks, greenhouses, and silviculture areas. Females dominate populations with a strongly female-biased sex ratio observed in field samples. Exhibits highly stereotyped grooming behavior for hygiene maintenance.