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Photos courtesy of Daniel Gilrein, Long Island Hort. Res. & Ext. Center |
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KEY TO APHIDS MOST COMMONLY FOUND IN GREENHOUSES
1. Aphid dark mahogany brown; found exclusively on
chrysanthemum (Fig. 46.) Chrysanthemum
Aphid
Aphid pale yellow, green, pink, or red; may be found on
chrysanthemum but occur on other plants as well.
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Photos courtesy of Daniel Gilrein, Long Island Hort. Res. & Ext. Center |
2. Cornicles long, slender, and pale in color but sometimes dark at the tip; body 2.0 mm long (Fig. 47.) Green Peach Aphid
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2.' Cornicles shorter and uniformly dark; body 1 to 1.8 mm long (Fig. 48) Melon or Cotton Aphid
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Click on ICON
Click on aphid name above, for more description
and line drawings. 
University of Florida/IFAS Reference to Pest Control Guides