Sugarcane borer moth
- Adult: Yellow or yellow-brown moth with narrow brown lines running the length of the forewing.
- Larvae: White and hairy with a brown head and sometimes brown spots.
- Eggs: Flattened, oval and laid in clusters so they overlap like fish scales. Initially white, but turn orange with age.
Timing of damage: Early to mid-season
Type of damage: Early in the season, larvae feed on the whorl. Later, they burrow into the stalk and sometimes the ears.
Scouting: Check 20 plants in five separate locations.
Economic threshold: There is no established threshold, but treatment is often more effective if
applied when the larvae are young and before they have bored into stalks.