Grape leaffolder—Desmia funeralis
Moths of the grape leaffolder are almost black, with two white spots on the forewings and two white stripes
across the abdomen. Larvae are translucent but appear greenish because ingested leaf tissue shows through
the body wall. Small black spots, located above the second pair of legs, are present on later instar larvae.
Leaffolders construct leaf rolls and feed on leaves. Berries may be eaten late in the summer if worm populations
are large and foliage sparse.
Remove suckers and thin leaves during the growing season to
help remove leaffolder eggs. Handpick leafrolls. Several natural
enemies attack grape leaffolders and may keep them under
fairly good control. Applications of Bacillus
thuringiensis or spinosad are also effective.