Olle Anderbrant and Lina Kristoffersen, Lund University, Sweden.

The carrot psyllid, Trioza apicalis, is a serious pest of carrots in parts of Europe. It has one generation per year and overwinters as adult on conifers. During early summer it migrates to carrot field where it lays eggs. Both adults and nymphs feed on carrot leaves, which causes curling and discoloration of the leaves and distorted and diminished root growth. We here describe two parts of our work on the carrot psyllid. First, we report the results from an inventory of psyllid occurrence on winter hosts (tree species, distance and direction from carrot fields). Second, we present a thorough investigation of the morphological and electrophysiological characteristics of the antennae and their response to host volatiles.