Name Kingdom: Animalia Phylum: Arthropoda Class: Insecta
Binomial Nomenclature: Diuraphis noxia
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From Eurasia (central and western) Came to U.S. in 1986 Brought
to Texas accidentally from Mexico Can now be found in many western
states (California, Colorado, Nevada, etc.)
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Map Of Distribution over all years
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Mostly eats Wheat and Barley Main economic effect: Farmers lose
money by losing crops and by buying pesticides
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What Effects Has it Caused? (Ecosystems) To save money by not
buying pesticides, types of flies have been introduced to stop the
aphids
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Food Chain Wheat Barley Sun Aphid Ladybug Flies
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Reasons For Success Many predators such as lady beetles are too
large to enter the rolled leaves Reproduce Asexually and all are
female
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In The Future Attempts to Stop the Menace Farmers can plant
their crops early Trade off- unanticipated weather Making sure
plants are not under water stress Trade off- might over water
plants Not planting wheat or barley Trade off- fewer wheat and
barley for us(consumers)
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Infected Crops The Aphid injects a toxin into the plant while
feeding and causes damage The leaves then get white longitudinal
streaks The leaf then curls up
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Different Types Winged (alate)- when the plant dies several
nymphs grow wings They seek a new host plant Dark green thorax
Wingless (apterous)- produce many children Normal green thorax