favourable conditions, but the fourth and fifth instars may be prolonged in the winter. The pupal stage can be prolonged considerably by diapause. A…
two types of aphid species: those that change to other host plants in the winter, and those species that do not. Species that alternate between host…
again. In October to December winged aphids appear again. These lay the winter eggs. Damage symptoms High populations of large blackberry aphids can…
again. In October to December winged aphids appear again. These lay the winter eggs. Damage symptoms Large raspberry aphids rarely reach populations…
aphid usually overwinters on rose bushes in the egg stage, although in mild winter some adults may continue to reproduce parthenogenetically. Large…
feed on the wood most of the time hibernating in their galleries during the winter months. Pupation usually takes place just beneath the bark in a…
sheltered places and greenhouses. Numbers of this aphid can build up even in winter and early spring when temperatures are still low. Winged forms are…
s in one year. The European red mite overwinters in the egg stage; the “winter eggs” are laid in the wooden parts of the host plants in autumn. Damage
parts of Europe until November, migrating back to southern Europe for the winter months. The moths can fly 2,000 to 2,500 km. In temperate climates,…
potato aphid manifests both anholocyclic (no eggs are laid) and holocyclic (winter eggs are produced) lifecycles. There is no alternation of hosts,…
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