It feeds extensively on young, unfolding leaves in the crown, and causes a stunting and dwarfing of the leaves. The shortened leaf stems bear distorted leaves. The darker green younger leaves contrast with the yellowing older foliage. The entire life history is spent on the plant. There are many hosts, especially flowering ornamentals.
Delphinium is probably the favorite host.
Spring and early fall are periods of greatest numbers. There is some varietal resistance. White grubs may take out most of the new planting if some control measures are not taken. Large grubs will consume all the roots on strawberry plants. The female punctures the unopened buds to form an egg niche.