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Aster Leafhopper: Source of Infestation, Host Plant Preference, and Dispersal
The local movement and host plants of Macrosteles fascifrons (Sta1) were studied for three years in eastern Washington by light trap surveys and sweeping. The data indicate that this leafhopper didExpand
Psilopa leucostoma a New Leaf Miner of Sugar Beets in the United States
Psilopa leucostoma (Meigen) was first observed as a pest of sugar beets in the United States at Umapine, Oregon, in 1962 and is believed to be a different biotype from the insect that attacks common lambsquarters, Chenopodium album L. Expand
Lygus Bugs in Eastern Washington: Color Preferences and Winter Activity
Significantly more Lygus hesperus Knight and L. elisus Van Duzee were collected in water-pan traps painted light orange yellow or deep chrome yellow than in pans painted cossack green, scarlet red,Expand
Notes on the Predaceous Habits of the Gray Field Slug, Deroceras laeve
Small numbers of the gray field slug, Deroceras laeve (Mulier), appear in home gardens at Yakima, Wash., during the summer and feed there sparingly on many plants, but the slugs are of most concern because of their repulsive appearance and the faint trails of mucus that they leave behind them. Expand
Sex Pheromones of the Pacific Coast Wireworm, Limonius canus
Females of the Pacific Coast wireworm, Limonius canus LeConte, were found to contain 2 sex pheromones. One was identified as hexanoic acid. The other is a branched, unsaturated carboxylic acid,Expand
Insect Hosts and Nymphal Development of Podisus Maculiventris Say and Perillus Bioculatus F. (Hemiptera, Pentatomidae)
This study highlights the importance of knowing the larva-to-fly ratio, as a source of infection for honey bees, which can be a clue to the presence of sexually transmitted diseases. Expand
Arrest and aggregation of male Myzus persicae (Hemiptera : Aphididae).
Male green peach aphids, Myzus persicae (Sulzer), preferred to feed on and to stay longer on peach twigs than on pear, apple, or apricot twigs, however, if extract of peach buds was applied to apple twigs (not a host plant), more males preferred the treated than the untreated twigs. Expand
Biology of the Aster Leafhopper, Macrosteles fascifrons (Homoptera: Cicadellidae), in Eastern Washington, and Some Overwintering Sources of Aster Yellows
Although populations of the leafhopper remained fairly constant from year to year, abundance of overwintering host plants of the disease was largely dependent upon the timing and abundance of rain in late summer, autumn, and spring. Expand
Autumn Populations of Green Peach Aphid on Peach Trees and the Role of Syrphid Flies in Their Control
Results indicated that after the winged gynoparae arrived on the peach trees, the oviparous population rapidly increased and that male arrival was synchronized with maturing of oviparae. Expand