About the Data
Species records include data on invasions history, distribution, ecology, impact, and more. These data were gathered from published literature and targeted surveys. All records have undergone expert review, unless otherwise noted.
Species Profiles
NEMESIS includes detailed information on about 500 species of marine and estuarine of invertebrates and algae introduced to the United States. Each record contains information on taxonomy, distribution, ecology, and impacts, as well as references.
Daily Invader
Chelura terebrans
Chelura terebrans is a marine wood-boring amphipod, often associated with isopods of the genus Limnoria. It has a broad global distribution being found from 18 – 61°N in the northern hemisphere and 30 – 44°S in the southern hemisphere. It is thought to be native to Europe with introduced populations on the East and West coasts of North America, Hong Kong, South Africa and New Zealand. It was most likely transported to many locations within the hulls of wooden ships. As a wood-boring pest, it has economic impacts by destroying wooden maritime structures.
* Content for this species is based on the literature and peer review is pending - if you have comments or feedback please contact Paul Fofonoff at fofonoffp@si.edu.
Daily Invader for 2025-04-29