Acartia tonsa (copepod)
|Location: Narragansett Bay, Rhode Island, 5/28/03
ID Notes: The details of the ursosme, especially the spination on the caudal rami are useful to distinguish A. tonsa from A hudsonica. Also note the lateral bulges just behind the antennae.
Collected and identified by Barbara Sullivan, University of Rhode Island
Photographed by: Ashley Cooper, Goucher College,
Towson, MD .