Insect Update from Danny Kline

June 9, 2010 in Extension

Right now, Pennsylvania golf course superintendents are seeing the first generation of annual bluegrass weevil adults emerge. In samples taken yesterday we had mostly 5th instar larvae, some pupae, and some teneral adults (adults that have just emerged and are white, since the blood has not fully entered their wings causing them to turn a darker color).

We are also seeing many May/June beetles in our light traps. Sod webworm adults have also been observed flying near turf.

Billbug populations seem to have peaked last week, with high numbers found in our pitfall traps. This probably means that they are laying eggs now.

Stay tuned for the next update.