Average percentage survival (± SEM) of Conotrachelus nenuphar larvae following a 5 d exposure (5 dpi) to entomopathogenic nematodes in a loam soil (from New Hampshire). Hi = Heterorhabditis indica, Sc = Steinernema carpocapsae, Sf = S. feltiae, Sk = S. kraussei, Sr = S. riobrave; strain designations are indicated after the species abbreviation and hyphen. Control = water only. Different letters above bars indicate statistically significant differences (SNK test, % = 0.05).