5. Pine Sawfly
• Larva
• Mostlly yellowish green with black spots.
• Orange head capsule
• Mature larvae are 10mm long
• Resemble with larvae of caterpillar
• Caterpillar have 2-5 pair of fleshy proleg buts
sawfly have more than 5 pair of legs on
abdomen
6. Pine Sawfly
• Adult
• Female are yellowish brown and large in size
• Male are mostly black but smaller in size
• Size range from(10-12mm) about ½ inch
7. Pine Sawfly
• Life Cycle
• Female sawflies have blade like plate to make
slit in pine needle
• She insert their eggs in these small openings.
• After hatching small larvae feed their.
• Mature larvae spin a cacoon that turn brown
• Some have more than 1 generation
8. Pine Sawfly
• Damage
• Larvae attack last year’s foliage
• Sparse foliage and thin crowns.
• Growth become slower
• Mortality may occur
9. Pine Sawfly
• Control
• Natural enemies predator, starvation and
unfavourable weather
• Cultural Control
Hand picking
• Insecticides:
Bifenthrin
permethrin
10. Pine Sawfly
• Control
• Natural enemies predator, starvation and
unfavourable weather
• Cultural Control
Hand picking
• Insecticides:
Bifenthrin
permethrin