. Larvae overwinter in the soil, usually in the third instar stage. and start feeding again in spring. They become active again and feed voraciously…
sheltering on the bark of pear trees. The adults become active in spring and start to feed on young leaves and flowers. Eggs are deposited in crevices…
host plant reaction. Infested plants become severely stunted when growth starts in spring. Petioles are shortened and leaves curled and twisted.…
aphids mainly feed on the underside of leaves of their summer hosts and start to reproduce parthenogenetically. Both wingless and winged forms are…
damage on roots. Especially the root tips are affected. They become black and start to rot internally. Just above the damaged area, the roots produce…
damage is caused through the transmission of plant viruses. Infestations start usually at the younger parts of the plant but can spread all over the…
Drosophila suzukii Spotted Wing Drosophila General Since the start of its invasion in 2008/2009, the spotted wing drosophila, which is originally from
trees, causing them to dry out and die. Damage on a box-tree most often starts in the lower part, where the oldest leaves, which contain high…
asexual, the young aphids are born as developed nymphs. They immediately start to feed on plant sap and grow rapidly. Aphids moult four times before…
asexual, the young aphids are born as developed nymphs. They immediately start to feed on plant sap and grow rapidly. When reproduction is sexual, the…
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