Resistance of Eucalyptus Marginata to Perthida Glyphopa (Lepidoptera: Incurvariidae)

Anatomy of leaves of jarrah, Eucalyptus marginata Donn ex Smith, and their response to the presence of the jarrah leafminer Perthida glyphopa Common, are described. Depending on the reaction to its eggs and larvae, 4 types of trees were recognised: (a) susceptible to oviposition, egg development and larval feeding; (b) resistant to egg development; (c) resistant to larval feeding; (d) resistant to oviposition and egg development. Leaves of types a, b and c had identical anatomy, whereas those of the only known tree of type d had a different structure of the mesophyll and lacked tannin in the palisade tissue.