Bluegrass billbugs in cool-season turf and bermudagrass, and hunting billbugs in zoysia are two major weevil species responsible for severe turfgrass damage. Adults become active in the early spring season, laying eggs in the sterns and sheaths of grass plants. Upon hatching, the small, legless larvae begin feeding inside the stems, tunneling through the crown and into the root zone, making control difficult. Damage appears as small, brown areas . Dead grass is easily pulled away from the crown, revealing hollow stems with sawdust “frass” present in the chewed areas.
Bluegrass Billbug Adult and Larva
Billbug Tug Test
Bluegrass Billbug Frass
Hunting (Zoysia) Billbug Adult