Sunflower
1 in.) gnat with tiny (.1 in.) cream-colored larvae
Contarinia schulzi laid when head is 1" in diameter. Brown spots at base of
individual florets or absence of ray flowers, cupping of
heads is symptom.
Sunflower headclipping weevil Black weevil, about .25 in. long, causes head drop.
Haplorynchites aeneus
Sunflower beetle Adult is .25 in. long with yellow strips length of wing
Zygogramma exclamationis covers. Humpback yellow larvae causes large areas of
defoliation.
Sunflower maggot Adult a yellow fly with dark wing markings, smaller than
Strauzia longipennis housefly. Maggots burrow in stem.
Red sunflower seed weevil Adult about 1/8 in. long, rusty colored, and found in head.
Smicronyx fulvus Adult female drills egg hole in developing seed and lays
egg in hole
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