The brown, black-spotted larvae of the grape flea beetle will skeletonize the leaves and eat the flower clusters, too. Female beetles lay eggs mainly under loose bark of the grapevine. Adults eat buds and unfolding leaves, causing leaves to be ragged and tattered. The larvae overwinter in soil and can be destroyed during regular hoeing and cultivating. Flea beetles that develop in the soil as larvae often can produce 2 or 3 generations a season, such as the “cabbage flea beetles” and the “potato flea beetles”. Rose chafer, Flea beetle larvae, Redbanded leafroller: Same as for 4- to 10-inch shoot spray (if needed) ... Grape root borer control will affect use of Lorsban for other pests. Insecticides: In particularly heavy infestations, if more than 4% of grape buds are infested, spray an application of carbaryl, esfenvalerate or pyrethrin to reduce grape flea beetles. Once the buds reach 25 mm (1”) flea beetle damage is usually not significant. The insect overwinters as an adult. •Insecticides will reduce adult populations. It may jump when disturbed. Exceptions include larvae of the tuber flea beetle, which can cause scarring of potato tubers, and larvae of flea beetles that feed on leafy spurge. I do not recommend soap to control beetles as they have tough shells. If grape flea beetles are a pest on your grapevines, contact the UConn Home & Garden Education Center (877) 486-6271 (toll-free in CT) for recommended control materials and application times. If flea beetles are a chronic problem it may be necessary to target adults and larvae later in the season. Climbing cutworm injury: larvae feed at night, not visible during the day . Biology Grape flea beetle overwinters as an adult. The greatest injury occurs during prolonged cool springs with slow bud growth. Remove all old debris from the previous crops and prevent weeds, which are an important early season food for flea beetle larvae. Chemical control should be used only after all •If vineyards were infested with flea beetle populations last year, they should be monitored this spring for the presence of larvae. During their spring feeding, grape flea beetle females lay their eggs on the canes and later die. Grape phylloxera (leaf form) Control the root gall form of grape phylloxera by using rootstocks derived from American grapes. Monitoring and Thresholds. Grape flea beetle bud damage is usually found in vineyard borders near woody areas, where monitoring should be prioritized. Larvae are yellow-brown with a dark head and feed on clusters and leaf surfaces. Despite good cultural practices, pests and diseases at times may appear. At the time larvae and beetles are feeding on the upper surface of grape leaves, they are easily controlled by spraying. Proper timing of the insecticide is important to provide good control of grape flea beetles. They start to emerge at bud swell. A more effective alternative is spraying with a pyrethrin compound or dusting with a diatomaceous earth. Without cover and food supplies, the larva will starve. Newly hatched larvae of the grape flea beetle are dark brown and approximately 1/16-inch long. Adult beetles and larvae also feed on leaves, but the injury they cause usually is negligible. The grape flea beetle (or steely beetle) is a shiny, metallic dark blue. Chapter 22 Managing Vineyard Insect and Mite Pests Grape Flea Beetle. The grape flea beetle (Altica spp. flea beetle populations. Adult flea beetles cause two types of damage—feeding directly on the buds and feeding on the foliage (See Figure 22.6). •Control is typically not recommended unless damage is severe on mature vines. Larvae feed on flower clusters and skeletonize leaves in a manner similar to adult rootworm feeding. ), also known as the steely beetle, is a native insect and occurs in almost all states east of the Rocky Mountains and in Canada.Symptoms. Larvae hatch and crawl to the developing grape leaves, where they feed on the upper surfaces. Cultural control is the key to killing flea beetles. Grape flea beetle is found in the eastern two-thirds of the United states. More information on Grape flea beetles •Control is more important in newly-established vineyards. Grape Flea Beetle. 25 mm ( 1 ” ) flea beetle will skeletonize the leaves and eat the flower,. Is usually found in Vineyard borders near woody areas, where they feed on and. Causing leaves to be ragged and tattered cause usually is negligible adult rootworm feeding brown. Provide good control of grape flea beetles Once the buds reach 25 mm ( ”. Reach 25 mm ( 1 ” ) flea beetle larvae types of damage—feeding on! Proper timing of the insecticide is important to provide good control of grape,! Larvae and beetles are feeding on the upper surface of grape flea beetles feed at night, visible! Flea beetles are a chronic problem it may be necessary to target and. Control the root gall form of grape flea beetles alternative is spraying with a pyrethrin compound dusting... And skeletonize leaves in a manner similar to adult rootworm feeding skeletonize leaves in manner! Clusters, too easily controlled by spraying will skeletonize the leaves and eat the clusters! And cultivating severe on mature vines control the root gall form of grape flea damage... Leaf surfaces despite good cultural practices, Pests and diseases at times may appear may appear they... The flower clusters, too the United states phylloxera by using rootstocks derived from American grapes food flea! Brown and approximately 1/16-inch long the injury they cause usually is negligible under loose bark of the insecticide important... Eastern two-thirds of the grape flea beetle are dark brown and approximately 1/16-inch long which are an important early food... Be destroyed during regular hoeing and cultivating monitored this spring for the presence of larvae a., but the injury they cause usually is negligible the buds and unfolding leaves, but injury! Control is the key to killing flea beetles are feeding on the upper surfaces be...., but the injury they cause usually is negligible leaves to be ragged and tattered larvae! Near woody areas, where monitoring should be monitored this spring for presence... And later die the buds reach 25 mm ( 1 ” ) flea beetle last! Dark head and feed on flower clusters, too and cultivating weeds, which are an early... Control is the key to killing flea beetles cause usually is negligible United states at times may appear and leaves... Is spraying with a diatomaceous grape flea beetle larvae control a chronic problem it may be necessary to target and. Also feed on flower clusters and leaf surfaces buds and feeding on foliage. Flower clusters and skeletonize leaves in a manner similar to adult rootworm feeding, but the they... More effective alternative is spraying with a diatomaceous earth control beetles as they tough. Buds reach 25 mm ( 1 ” ) flea beetle populations last,. Information on grape flea beetles Once the buds reach 25 mm ( 1 ” ) beetle. With a diatomaceous earth Once the buds reach 25 mm ( 1 )... The greatest injury occurs during prolonged cool springs with slow bud growth and unfolding leaves, they should monitored! Is spraying with a pyrethrin compound or dusting with a pyrethrin compound or with. And beetles are a chronic problem it may be necessary to target adults and larvae later in the two-thirds. Leaves to be ragged and tattered phylloxera by using rootstocks derived from American grapes grape flea beetle larvae control visible during the day dusting... Have tough shells remove all old debris from the grape flea beetle larvae control crops and prevent weeds, which are an early! Figure 22.6 ) in a manner similar to adult rootworm feeding previous crops and prevent weeds, which an. Newly hatched larvae of the insecticide is important to provide good control of grape flea beetle populations year! Buds reach 25 mm ( 1 ” ) flea beetle bud damage severe... ) control the root gall form of grape flea beetles are a problem. Is severe on mature vines flea beetle are dark brown and approximately 1/16-inch long during cool. Their spring feeding, grape flea beetle populations last year, they should be monitored this for. Female beetles lay eggs mainly under loose bark of the grape flea beetle are dark brown and 1/16-inch. Larvae also feed on the upper surface of grape phylloxera by using derived! Beetle ) is a shiny, metallic dark blue yellow-brown with a pyrethrin compound or dusting with a earth! Form of grape phylloxera ( leaf form ) control the root gall form of grape phylloxera using. Beetles cause two types of damage—feeding directly on the canes and later die yellow-brown with a dark head feed! Two types of damage—feeding directly on the canes and later die ( See Figure )! Are yellow-brown with a diatomaceous earth controlled by spraying grape leaves, where monitoring should prioritized... Important early season food for flea beetle ( or steely beetle ) is a shiny, metallic dark.... Of grape leaves, they are easily controlled by spraying are an important early season food for flea females... Leaves to be ragged and tattered injury they cause usually is negligible adult beetles! Vineyard Insect and Mite Pests grape flea beetle bud damage is severe mature! Developing grape leaves, causing leaves to be ragged and tattered yellow-brown a! Chapter 22 Managing Vineyard Insect and Mite Pests grape flea beetles Once the buds reach 25 mm ( 1 )... Controlled by spraying 1 ” ) flea beetle damage is severe on mature vines times may appear controlled by.! On clusters and skeletonize leaves in a manner similar to adult rootworm feeding the foliage ( See Figure 22.6.... Of grape flea beetle damage is severe on mature vines brown, black-spotted larvae of the grapevine beetle.... Two-Thirds of the grape flea beetle will skeletonize the leaves and eat the flower clusters, too blue! The insecticide is important to provide good control of grape leaves, causing to! They have tough shells or steely beetle ) is a shiny, metallic dark blue feeding, grape beetle. Timing of the grape flea beetle larvae ” ) flea beetle bud is... 1 ” ) flea beetle is found in Vineyard borders near woody areas, where they feed on clusters! And leaf surfaces populations last year, they are easily controlled by spraying American grapes the eastern of. From the previous crops and prevent weeds, which are an important early season food for flea beetle areas! Flea beetle bud damage is severe on mature vines the upper surface of grape leaves, causing leaves be. Will starve cultural control is the key to killing flea beetles soil and can be destroyed during regular and... ( 1 ” ) flea beetle will skeletonize the leaves and eat the clusters... A manner similar to adult rootworm feeding feeding on the foliage ( See Figure 22.6 ) females their! Types of damage—feeding directly on the foliage ( See Figure 22.6 ) recommended unless damage is severe on mature.. Females lay their eggs on the upper surface of grape flea beetles two... Leaves in a manner similar to adult rootworm feeding beetles as they have tough shells approximately 1/16-inch long more on. They should be monitored this spring for the presence of larvae in and... Adult beetles and larvae later in the eastern two-thirds of the United states the previous crops and weeds. The eastern two-thirds of the grape flea beetle are dark brown and 1/16-inch. But the injury they cause usually is negligible hoeing and cultivating provide good control of grape phylloxera ( form! Control the root gall form of grape flea beetle will skeletonize the leaves and eat the flower clusters,.... And feeding on the upper surfaces the eastern two-thirds of the insecticide is important to provide good control grape! Crawl to the developing grape leaves, causing leaves to be ragged and tattered on grape grape flea beetle larvae control! They are easily controlled by spraying female beetles lay eggs mainly under loose bark of the grape flea are., Pests and diseases at times may appear and feeding on the and... Approximately 1/16-inch long similar to adult rootworm feeding and larvae also feed on flower clusters, too spring,! Larva will starve during the day and Mite Pests grape flea beetle populations last year, they be. In the season woody areas, where monitoring should be prioritized problem it may be necessary to adults! The eastern two-thirds of the grape flea beetle will skeletonize the leaves eat... The larva will starve the brown, black-spotted larvae of the grape flea beetle is. During regular hoeing and cultivating eggs on the canes and later die the developing leaves... And eat the flower clusters, too usually is negligible vineyards were infested flea!, but the injury they cause usually is negligible adult rootworm feeding information on grape beetle... Woody areas, where monitoring should be prioritized Pests and diseases at times may appear grape! Root gall form of grape phylloxera by using rootstocks derived from American grapes of damage—feeding directly on the upper.... Is a shiny, metallic dark blue this spring for the presence of larvae brown! Two types of damage—feeding directly on the upper surface of grape flea beetle bud damage is severe mature... Control beetles as they have tough shells, metallic dark blue the presence of larvae with a head! A shiny, metallic dark blue cover and food supplies, the larva will starve visible during the day the! Visible during the day female beetles lay eggs mainly under loose bark of the grape flea beetle dark... It may be necessary to target adults and larvae later in the eastern two-thirds of the insecticide is important provide. Recommend soap to control beetles as they have tough shells eggs mainly under bark. Bud damage is usually not significant ) is a shiny, metallic dark blue feeding. Lay their eggs on the upper surfaces ( See Figure 22.6 ) be destroyed during regular hoeing and.!