Larva on leaf with chewed holes. Lifecycle Hibernating adults emerge of their overwintering sites such as wooded areas, old fields or abandoned vineyards early in spring and proceed towards the vineyards. Eggs are laid on stems or on either side of leaves once budburst has begun. There is one generation per year. Larvae and adults that emerge in summer gnaw holes in the foliage but cause much less damage than adults from the first generation.
Infestations are generally very localized and usually restricted to border rows.
4 mm long. Note the dark-red spot on the head. Also note the large femurs on the hind legs allowing it to flee by jumping. Leaf with holes made by an adult. Life cycle Nymphs of this insect develop in the soil and may feed on the roots of weeds and some cultivated plants.