Figure 8 A grapevine moth killed by parasitic wasps Figure 9 Predatory shield bug Cermatulus nasalis, feeding on, a grapevine. Moth caterpillar (Photo: A Loch) Grapevine moth is usually a minor pest with little, economic impact. However if caterpillar,, Numbers reach, high levels severe vine defoliation may result which can, affect berry development and carbohydrate storage.Caterpillars feed on leaves but may begin feeding in bunches if foliage is depleted. Parasitoids such as TACHINID flies. And wasps predatory shield, bugs and birds provide some control against the pest. Several insecticides are registered for. Grapevine moth.Grapevine hawk moth (Hippotion celerio) and Vine hawk moth (Theretra oldenlandiae) Hawk moth caterpillars are voracious. Feeders of grapevine leaves but are only occasional pests in Australian vineyards. Mature caterpillars grow to a similar. Size as the grapevine moth but can be distinguished from the latter by their fleshy spine on the upper rear end of, the bodyAnd the characteristic coloured eye spots along the body. Pupation occurs on or just under the soil surface. Adult moths. Are, night flying have wingspans of about 7 cm are largely, grey or brown coloured and are, good fliers that can often be. Caught near lights. If insecticidal control is required use a registered chemical. Vine borer moth (Echiomima sp.) Vine. Borer moth (Echiomima sp.) is a native moth that feeds on native plants and also attacks horticultural crops including grape vines. Vine borer moths. Have become a pest issue in the Riverina and have been recorded in the Riverland Hunter Valley, and Queensland. The life. Cycle of the vine borer takes a year to complete. Adult moths are approximately 10 - 15 mm long creamy white, to light brown. In, colourPossess a thick tuft of white hair under the head and often, have a distinct black dot on each forewing. Moths are active. At night during November and December. Eggs, are white cylindrical shaped and very small and in bark crevices around the. Dormant buds on Spurs near the cordon. Larvae feed on the surface of the bark or dormant buds before tunnelling into the. Heartwood.Most feeding occurs on the outer sapwood and bark around the spur and cordon which effectively, girdles the spur or, cordon. Larvae feed beneath a protective blanket of, Larval frass which is webbed together with silk and makes, spotting this pest. During pruning an easy task. Larvae grow to about 25 mm long and as they grow feeding and levels of damage increase.A field research trial conducted on Merlot in the Riverina showed that damage caused by vine borer led to significant. Reductions of 43%, for yield 26% for bunch numbers, per shoot 46% for shoot length and 58%, for cane dry weights per vine. Spur (AD, Loch unpublished data). Feeding damage around vine spurs and dormant buds can even lead to death of buds or entire. Spurs.Continued feeding damage by vine borer moth over several seasons could potentially lead to loss of vigour crop losses,, Through loss of, fruiting spurs and dieback. Vine borer moth has been found feeding on a range of red and white wine grape. Varieties in the Riverina but the pest shows a clear preference for the varieties Merlot Ruby Cabernet, and Pinot Noir.? Mealybug (Pseudococcus sp.) Three species of mealybug are commonly found in Australian vineyards: longtailed mealybug (Pseudococcus longispinus. ), citrophilus mealybug (Pseudococcus calceolariae) and obscure mealybug (Pseudococcus affinis). Longtailed mealybug. Is the most serious pest and is prevalent in many Australian grape-growing regions.
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