Division of Entomology & Nematology, Central Potato Research Institute, Shimla-171 001, Himachal Pradesh (India).
Out of the several species of white grubs reported to damage potatoes, Holotrichia (Lachnosterna) coracea (Hope) is the predominant species in north-western hills of Himachal Pradesh. The damage to potato tubers ranged from 15.5 to 80.0% (based on the weight of total and damaged potatoes) in prone areas. The maximum damage (80.0%) was recorded in Shilaroo and its adjoining villages and least (15.5%) in Shimla. Also, 50.9% damage to potatoes was recorded from Sirmour district. The late harvested crop suffered most.
