Japanese Beetle (Coleoptera: Scarabaeidae): Influence of Sugars on Feeding Response of Larvae

Sucrose (0.01-1 M) and 13 other naturally occurring sugars (0.1 M) were evaluated on cellulose acetate-cellulose nitrate membrane filter disks as feeding stimulants for larvae (third in star) of the Japanese beetle, Popillia japonica Newman. Five sugars—sucrose, maltose, fructose, glucose, and trehalose—stimulated larval feeding. All of these, with the exception of trehalose, had previously been shown to be strong phagostimulants for adult beetles.