Life Cycle: Eriosoma lanigerum is an exotic species in the Middle East. In North America its primary host is the American elm tree (Ulmus. back to HYPP Zoology home page. Eriosoma lanigerum (Hausmann) Schizoneura lanigerum. Insecta, Homoptera, Pemphigidae. woolly apple aphid. Compiled by Whitney Cranshaw, Colorado State University. Eriosoma lanigerum (Hausmann) Homoptera: Eriosomatidae.
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Recent approaches have focused on integrated pest management with use of resistant apple varieties, and more specific insecticides that do not kill the natural enemies. One application of 2 or 3 percent dormant oil was as effective as insecticides applied against crawlers.
Eriosoma lanigerum – Wikipedia
The net correlation between movement and mean maximum temperature was positive and significant, whereas it was insignificant for mean minimum temperature and rainfall. In the great majority of cases, identifications have been confirmed by microscopic examination of preserved specimens.
Movement of woolly apple aphid Eriosoma lanigerum Homoptera: Rates of parasitism are greater in long, narrow colonies than in round colonies of the same size because a higher proportion of woolly aphids are located on the colony margins where parasitoids concentrate their attacks. The body length eriosoam Eriosoma lanigerum apterae is 1. Adult Harmonia conformis had a lower instantaneous search rate and handling time and could also consume larger numbers of Eriosoma lanigerum than could mature larvae.
Journal of Applied Entomology26— Sometimes it is possible to see a circular egiosoma on the upper surface of the aphid which the adult wasp created when it emerged from the body of its host.
Environmental Entomology 39— Similar shelters have been used in studies of European earwigs elsewhere Phillips, ; Helsen et al.
Peak captures were observed from May to June, and in some years and orchards there seemed to be two annual peaks fig 1probably due to fluctuation of the maximum temperatures in summer. Average yield losses were 2.
EPPO Global Database
Journal of Applied Entomology, 2: Aphid numbers declined with the onset of winter but a few colonies remained on apple trees during winter. Secreted wax in the form of threads passes out of the cuticle as filaments.
Nematodes were found inside the body cavity lanigeruk several aphids with entry possibly being through the anus via a droplet of honeydew.
Root damage is also harder to detect and more difficult to control. Journal of Natural History 33 4 Colonies were counted on half of each of 25 apple trees per 2 ha block. The woolly apple aphid is thought to be native to north-east North America, where it used to be fairly well controlled by a chalcid parasitoid Aphelinus mali.
According to their contribution to explain the overall variance in the PCA and to the easiness to obtain erlosoma, the X-variables used to construct the PLS-1 were: In addition to sexual morphsshiny brown, oblong eggs were seen on apple leaves grown outside – as well as in the glasshouse. Journal of Pest Science 86 4 Pemphigidae on apple Malus pumila plant in relation to weather parameters.
For this purpose, we set up 10 earwig shelters on the second scaffold limb of 10 different trees randomly selected within the infested ones in each orchard.
The lack of correlation that we observed may be explained because in the conditions of our study, maximum crawler captures were observed during lsnigerum driest weeks of the year, when rainfall was rare, more similar to the conditions in which Beers et al.
Population density of Aphelinus malia parasite of Eriosoma lanigerum in Iraq.
AphID – Eriosoma lanigerum
Boreau de Roince C. Characteristics associated with Woolly Apple Aphid Eriosoma lanigerumresistance of three eeriosoma rootstocks. This study showed that parasite activity was very much synchronized with its erisooma and could be utilized successfully to control the friosoma in Iraq. One or more of the features that are needed to show you the maps functionality are not available in the web browser that you are using. At the beginning of February, the coldest month in our area, 75 shoots that had similar levels of WAA infestations the previous summer were selected.
Deciduous Fruit Grower 5122—23, When a light source was combined with a temperature gradient, high temperatures and light were highly repellent to the aphids. With these results, the model was considered not to be accurate enough to predict Up. Environmental Entomology, 41 6: For example, in Norway, where the aphid is not established, E. In growth chamber experiments, stem splitting and root galling formed as a result of E.
The Thomas Say Foundation.