Taken together, these data suggest that several species may be masquerading under the label Lepidosaphes ulmi. Economic importance: The. Lepidosaphes ulmi (L.) Hanson, T., and E. B. Walker. [n.d.] Field guide to common insect pests of urban trees in the Northeast. Waterbury, VT: Department of. Lepidosaphes ulmi also known as oystershell scale are Scale Insects that is a pest on woody plants. The small insects attach themselves to bark and cause.

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Argyriou and Kourmados proposed a spring treatment to protect the fruit, and a summer application in August to control the overwintering generation of L. In addition to physical lepidozaphes, the fruit appears unsightly.

Lepidosaphes ulmi

These undergo four moults and the adult males have eyes, three pairs of legs, one pair of wings, a head and a body divided into a thorax and abdomen. Aphelinidaewith preliminary notes on the structure of the male antennal scape.

A note on little leaf of Angelonia grandiflora. Phenology, embryonic diapause and importance of natural enemies of Lepidosaphes ulmi L. Photosynthesis, the process by which green plants and certain other organisms transform light energy….

Acta Oecologica, Oecologia Applicata, 4 2: They may be univoltinebivoltine and even polyvoltineand may, or may not, infest the same host plant, differ in fecundity and cold-hardiness, as well as possess, or lack, an embryonic diapause.


The Canadian Entomologist, 33 6: Entomologicheskoe Obozrenie, 57 1: A review of biology and ecology of diaspine scales lepidosalhes Japan Homoptera: The apple comma scale. Hemiptera attacking Euramerican poplars. The apple mussel scale – a pest of ash. Dedicated naturalists volunteer their time and resources here to provide this service.

Trees for strip-mined lands. Tsachev reported that this species is a widely distributed pest in Bulgaria where it prefers apple and willow. Rastitelna Zashchita, 27 3: Biologicheskii Zhurnal Armenii, 32 3: Suresh and Mohanasundaram found that it infested species of Citrus in India.

Journal of Economic Entomology, 90 6: Insect pests of economic significance affecting major crops of the countries in Asia and the Pacific region.

The Armored Scales Homoptera: Go to distribution map Rosen D, ed, Biological control programmes against insects and weeds in Canada Also, when crushed, dead scales are dry and flake easily off the bark; scales covering eggs typically will produce some moisture when crushed. Proceedings of the Entomological Society of Washington, 98 1: However, it was reported to be among the most frequently encountered pests out of 25 species of scale insects infesting fruit trees in European orchards Kozar et al.

Hemisarcoptes malus Shimer – a predatory mite on Lepidosaphes leppidosaphes L. Scale insects polyphagous pests of tree species. The oystershell scale occurs in almost every state in the United States and was probably introduced from Europe. Acta Phytopathologica et Entomologica Hungarica, 23 Lady beetles Coleoptera, Coccinellidae of Leningrad region orchards fauna, biology and their role in pest population dynamics.


Oystershell scale

Please try again later. Lepidosaphss life histories of the oystershell scale, as well as the size and colour of the cover of the adult female, vary according to the host.

Please consider a year-end gift to BugGuide! Nakahara, ; Mendel et al. The Scale Insects of California.

oystershell scale (Lepidosaphes ulmi)

At the bottom of the article, feel free to list any sources that support your changes, so that we can fully understand their context. Merrill, ; Wildbolz, Coccoidea of fruit plants in Afghanistan. There are no eyes or legs and the short antennae have only a single segment. Coccoidea of deciduous fruit orchards in some European countries.

Plant Disease Reporter, 61 7: If you would like to, you can learn more about the cookies we use. Infestations may cause leaf yellowing, fruit deformity, leaf drop and dieback of branches.