have a very long lifecycle, lasting between one and three years. This cycle starts with the deposition of eggs in the ground, close to plant roots.…
the males, who mate with females that stay close to the ground. Females start to deposit eggs into the soil at a depth up to 5 cm soon after mating.…
instars, their body becomes grey. From the third instar onwards, each larva starts producing thousands of very small, barbed urticating hairs (ca. 0.1…
damage leaves by feeding between the upper and lower parenchyma. The mine starts to turn yellow and later brown. By this time, the damage is very…
Because Otiorhynchus sulcatus is parthenogenetic a single female is enough to start a new population. About Black vine weevil Damage symptoms The…
June in groups in the soil. They hatch about one month later and the larvae start to feed on roots. The larvae (‘wireworms’) are long, thin,…
the larvae drop to the ground to pupate. The adult stage overwinters and starts a new cycle next spring. Damage symptoms Both adults and larvae feed…
are shiny and white. The eggs hatch after about four weeks and the larvae start to feed on roots. The larvae are white-coloured, C-shaped grubs, with…
emerging in spring, the aphids mainly feed on the underside of leaves and start to reproduce parthenogenetically. They are very mobile and drop from…
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