The boll weevil (Anthonomus grandis grandis) is a historic cotton pest. Adults feed on plant terminals before bloom, then shift to young bolls, puncturing them to lay eggs inside. Larvae develop within the boll, destroying the lint.
Adults are brown to grayish-brown, 1/8 to 1/3 inch long, covered in fine hairs giving a fuzzy appearance. Size varies considerably.
For a full technical description, see the Texas Extension Agricultural Service publication on boll weevil biology and management.
Understanding the weevil's life cycle is key to timing controls effectively in cotton production.
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