What's eating my mustard greens 'southern giant curled'?

Mustard Greens 'Southern Giant Curled' has large, heavily ruffled leaves that trap moisture and pest eggs. Flea beetles, aphids, harlequin bugs in the South, and caterpillars are the main threats. Harlequin bugs are a serious warm-region pest unique to this and other brassicas. Row covers and Bt-k are the primary defenses.

Clusters of tiny holes in the broad leaves; seedlings most at risk; ruffled surface traps adult beetles Fine mesh row cover from sowing; kaolin clay spray; diatomaceous earth along bed edges

Sucking feeding causes white and yellow leaf blotches; wilting; plant death in heavy infestations; overwinters in brassica debris Hand-pick adults and egg masses (distinctive barrel-shaped clusters); remove crop debris after harvest; plant trap crops of mustard at field edges

Grey colonies hidden in curled leaf crevices; difficult to spray; sooty mold follows; leaves become unmarketable High-pressure water jets into the ruffles; insecticidal soap applied thoroughly; remove first-colonized plants

Large holes eaten in broad outer leaves; caterpillars hide in the curled leaf folds Bt-k spray working into the ruffled leaf structure; hand-pick; row cover