Leafroller oviposition on larval host plants

摘要: Caged greenheaded leafroller (Planotortrix excessana (Walker)) (Lepidoptera: Tortricidae) and lightbrown apple moth (Epiphyas postvittana adults were provided with the leaves of known larval host plants to determine relative amount oviposition on different hosts. Relative leaves, oviposited fewer eggs narrow-leaved plantain (Plantago lanceolata L.), blackberry (Rubus strigolosus agg.) equal numbers poplar (Populus nigra L.). Greenheaded leafrollers laid more than leaves. Close examination likely factors determining sites revealed that hairs dorsal leaf surface could affect choice sites. Lightbrown moths therefore tended oviposit frequently less hairy mature shoots compared hairy, emerging which had a greater density hairs. Arrangement plant clusters may...