Mustard saw fly (Athalia lugens,Ttenthredinidae, Hymenoptera )

• Polyphagus pest

Damaging stage : larva

Nature of damage : bite hole into leaves prefering the young growth and skeletonized the leaf completely.

Idenification

• Egg : inside the leaf with the helpsof ovipostors .
• Larva : initially hite in color later changed to Quickly fall from the plant when touched in them.
• Pupa : pupation in soil.
• Adult : orange color body with smokey transparent wings with black head.

Life cycle :

Egg—5-7 days–> larva–4-10 days–> Pupa –15-23 days—> Adult

Management

• Deep summer ploughing to
• Early sowing .
• Apply irrigation in seedling stage is very rucial satge for sawfly management because most of larva die due to drawing effect. Severe cold reduced pest popⁿ.
• Larrval parasitoid : perilissus
• Bacteria : serratia
• Bittergourd seed oil emulsion which acts as anti
• Malathian 50EC @ 1000/ha or quinolphos 25EC @625ml/ha at 600-700 lit of water /ha .