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The Painted Leafhopper, Endria inimica (Say), a Vector of Wheat Striate Mosaic Virus in Manitoba1

Published online by Cambridge University Press:  31 May 2012

P. H. Westdal  and
H. P. Richardson
P. H. Westdal
Affiliation:
Canada Agriculture, Research Station, Winnipeg, Manitoba
H. P. Richardson
Affiliation:
Canada Agriculture, Research Station, Winnipeg, Manitoba
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Abstract

The painted leafhopper, Endria inimica (Say), occurs in grasslands in southern Canada and the northern states of the U.S.A. It is the only known vector of wheat striate mosaic virus (WSMV) in North America. In Manitoba the insect is not abundant. It does not migrate into the province, and overwinters in the egg stage only. There are two generations per year, the first completing development on grasses about 1 July and the second developing mainly on cereals in summer. E. inimica has a high rate of development at 90° F.; the lower limit is near 60° F. At 80 ± 5° F. the life cycle was completed in 45.8 days. In the field, in summer, the life cycle was completed in 42 days. A description of the life stages of the insect is presented.

WSMV has occurred only in trace amounts in Manitoba. Leafhoppers collected in the field showed a low frequency of virus transmission and the source of overwintered virus appeared to be small. The disease does not appear to constitute a serious problem in Manitoba.

Type
Articles
Information
The Canadian Entomologist , Volume 98 , Issue 9 , September 1966 , pp. 922 - 931
Copyright
Copyright © Entomological Society of Canada 1966

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