THE IMMATURE STAGES AND LIFE HISTORY OF THE JARRAH LEAFMINER, PERTHIDA GLYPHOPA COMMON (LEPIDOPTERA: INCURVARIIdAE)

The morphology of egg, 4 larval instars, chaetotaxy of mature larva and pupa of the univoltine jarrah leafminer moth Perthida glyphopa, are figured and behaviour described. Barrel shaped eggs become flattened when deposited under the epidermis of a leaf of jarrah (Eucalyptus marginata Smith). Apodous larva with long setae on the anterior of partly retracted head and sides of body segments, excavates a mine, avoiding thick veins and oil glands. On maturing it constructs a cell, enters the soil, aestivates and pupates. Wriggling of pupa's abdomen equipped with spines and setae forces it to the soil surface, where ecdysis occurs.