Sawfly larvae tend to congregate in groups ... thin foliage, and the growth of white fungus at the tree's base. Management, unfortunately, is difficult and infected trees should be removed ...

Local arborists are encouraging Illinois residents to keep an eye out for a spreading invasive insect this spring. Jess ...

Grass Sawfly For initial detection in late April – early May, take 5 sweeps in 5 sites especially along field margins; Once larvae are detected examine five linear foot of row in 10 sites for the ...

Adults emerge (Fig. 1), mate and lay eggs that hatch after about 10 - 14 days. Larvae (Fig. 2) are often found in late May to early June. The larvae appear in mid to late May and will cause window ...

“The (wasp) is able to paralyze and incapacitate the sawfly larvae early enough to reduce damage,” Easterly said. Team Sawfly is investigating a new project that involves transporting the ...

When we first get to the field site, I show students galls on the willows. Have a few students carefully open the galls (with a pocket knife or thumbnails) to find a sawfly larva. You could collect a ...