I am looking for any references that mention the edge effect in phytophagous insects (higher densities of insects at the periphery of their host plant populations). Thanks, Diana. Dr Diana Percy CSIRO Entomology GPO Box 1700 Canberra, ACT 2601 AUSTRALIA Tel: +61 (2) 6246 4335 Fax: +61 (2) 6246 4000 Email: diana.percy at csiro.au