Anasa tristis
Common pest of squash and pumpkins that sucks plant sap, causing wilting and plant death. Also vectors cucurbit yellow vine disease.
Adults are 5/8 inch, flat-backed, grayish-brown. Nymphs are gray with black legs. Eggs are bronze-colored, laid in clusters on leaf undersides.
Yellow spots that turn brown. Wilting leaves and vines. Plant collapse. Ragged holes in leaves. Scarred fruit.
One generation per year. Adults overwinter in debris, emerge in spring. Eggs hatch in 1-2 weeks. Nymphs develop through 5 stages over 4-6 weeks.
Remove plant debris in fall. Rotate crops. Use row covers until flowering. Delay planting until late June. Resistant varieties (Butternut types).