Larvae feed on the flesh of apple fruits around the stalks or where fruits are touching or where fruits are in contact with leaves or branches. They tie leaves and plant material together with silken webbing to make a shelter often attached to the surface …
Adult (resting) 9-11 mm long, forewings pale ochreous yellow each with four darker spots and scattered darker scales. Hindwings paler. Lie still when disturbed (e.g. by beating) characteristically scuttling round on its back sporadically. Egg Very pale …
Beating for adults Unlike most moths, adult Blastobasis can be sampled using the beating method, as when dislodged from the vegetation they do not fly but fall onto the beating tray, where they either lie still or scuttle around on their backs. Beating …
Forecasting methods for Blastobasis have not been developed. However, limited information indicates that the first adult flight starts at approximately 130 day degrees above 10 o C and the peak flight occurs at approximately 240 day …
Blastobasis often goes unnoticed until harvest when the damage is done and it is too late to take remedial action for the current season. Insecticidal controls need to be timed to control caterpillars as they hatch from eggs. The flight and egg hatch of …
Cultural control options for this pest are limited. Beech hedges often harbour the pest, so removal of these if the pest is present is likely to be helpful. Thinning fruits so that they only occur singly will also reduce damage substantially. Where larvae …
Little is known about the natural enemies of blastobasis. No parasitic wasps have been reared from samples of larvae collected in the field. It is probable that a wide range of generalist insect predators such as anthocorids, mirids, lacewing larvae, …
Biological control methods have not been developed. Unfortunately, sprays of Bacillus thuringiensis have only limited efficacy against the …
Alford, D. V. 1980. Blastobasis decolorella (Wollaston) (Lepidoptera: Blastobasidae), a potentially serious apple pest. Plant Pathology 29, 145-146. Easterbrook, M. A. 1985. The biology of Blastobasis decolorella (Wollaston) (Lepidoptera: Blastobasidae) a …
Life cycle Pest status Other hosts Varietal susceptibility Distribution Damage Recognition Monitoring Forecasting Chemical control Cultural control Natural enemies Biological control Further …
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