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Oriental Armyworm – Mythimna separata

Available Products
1 mg Standard Lure
Dispenser Details
Natural Rubber Septum
Active Life
4-6 weeks (temperature dependent)
Pest Details
Adult
Wingspan of 38-48 mm. Forewings are greyish-yellow with darker markings and a reddish-yellow tint. Round and reniform spots are coloured pale-yellowish with indistinct edges. Hindwings are grey with darker external margins.
Larvae
Fully grown larvae reach 40mm in length. Two wide black-brown stripes and a paler stripe run the length of the body, laterally. Spiracles are brown with a black rim.
Eggs
Spherical and milky-white in colour and 0.5-0.6 mm in diameter. The surface is thinly reticulate. Laid in 2-4 rows in groups of 10.
Distribution
South and Eastern Asia, including Russia and Oceania.
Economic Host(s)
Most damaging to arable crops including wheat (Triticum), maize (Zea), rice (Oryza) and oats (Avena). Can also infest fodder crops.
Symptons/Signs
Larval feeding on leaves results in entire leaf removal, including the veins. In barley, wheat and rice the panicles, flower anthers and seed heads can be entirely severed. During the grain filling stage mature larvae can sever panicles at their base resulting in bending or severed seed heads falling to the ground. Larvae often move in rows that are 15-20 m wide to search for food during the night
Generations
Typically 2
Monitoring
Adults Present
May – October (climate dependant)
Recommended Trap Density
2 traps per hectare in large uniform areas of crops and 3- 5 traps per hectare in mixed or less dense crop stands.
Trap Maintenance
Check traps on a regular basis; at least twice a week. It is recommended to replace the pheromone dispensers every 4 weeks to achieve optimum results. Replace the sticky inserts, if used, when they become filled with dust or insects.
Storage
Keep product away from direct sunlight, heat, sparks and open flame. Store in a refrigerator for a shelf life of 12 months or a freezer for an extended life of 24 months. Always store sealed in original packaging.
Recommended Trap
View Trap

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