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Red cotton bug:

Red cotton bugs, also known as cotton stainers, are a significant pest of cotton crops because both adults and nymphs feed on developing fruits and seeds, causing damage and staining. They suck sap from the plant, impacting fruit development and yield. The bugs bore through cotton bolls to reach the seeds, leading to reduced seed quality and germination.

Feeding Behavior:
Bolls and Seeds: Red cotton bugs primarily feed on developing cotton bolls and mature seeds, causing significant damage.
Nymphs and Adults: Both nymphs and adults feed on cotton plants.

Sap Extraction: They suck plant sap, leading to reduced plant vigor and fruit quality.

Lint Staining: The bugs' feeding activity can stain the cotton lint, reducing its market value.

Secondary Fungal Infections: Red cotton bugs can transmit cotton-staining fungi (Nematospora gossypii) through their feeding, exacerbating lint damage.

Gregarious Feeding: Both nymphs and adults often feed in groups, particularly around developing and opened bolls.

Impact on Cotton:
Reduced Yield: Damage to bolls and seeds directly impacts cotton yield and quality.

Lower Seed Quality: Feeding on seeds can lead to reduced oil content and germination rates.

Lint Staining: Staining reduces the market value and quality of the cotton lint.
Boll Shedding: Severe infestations can cause premature boll shedding.