Light brown apple moth adults are highly sexually dimorphic and variable in wing pattern and colour, although a lighter, diamond-shaped area extending from behind the head to ca one-third of body length is typically visible at rest. Male forewing length ranges from 6-10 mm, compared with 7-13 mm in females (Thomas, 1975a). Males tend to have a higher contrast in colouration than females, although the level of contrast varies.
First instar larvae are approximately 1.6 mm long, and final instar larvae range from 10 to 20 mm in length. The body of a mature larva is green with a darker green central stripe and two side stripes. The first larval instar has a dark-brown head; all other instars have a light-fawn head and prothoracic plate. Overwintering larvae are typically darker.
Pupae are green after pupation, but become brown within one day.
Light brown apple moth adults are highly sexually dimorphic and variable in wing pattern and colour, although a lighter, diamond-shaped area extending from behind the head to ca one-third of body length is typically visible at rest. Male forewing length ranges from 6-10 mm, compared with 7-13 mm in females (Thomas, 1975a). Males tend to have a higher contrast in colouration than females, although the level of contrast varies. First instar larvae are approximately 1.6 mm long, and final instar larvae range from 10 to 20 mm in length. The body of a mature larva is green with a darker green central stripe and two side stripes. The first larval instar has a dark-brown head; all other instars have a light-fawn head and prothoracic plate. Overwintering larvae are typically darker.Pupae are green after pupation, but become brown within one day.
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