Photo by Melody

Picture of four-lined plant bug

Showing a picture of 'four-lined plant bug'

By jules_jewel:
DAMAGE: (Picture is of a Brugmansia Leaf) There is a wide range of hosts for this pest including: cucurbits, potatoes, alfalfa, flowers, herbs, and many more fruits and vegetables. Feeding by the four-lined plant bug is usually not detrimental to plants. Smaller plants are more susceptible while 50% of a larger plant's foliage needs to be damaged in order to affect root growth. With piercing-sucking mouthparts, the four-lined plant bug removes the plant's chlorophyll leaving a window of upper and lower epidermis. A toxin present in their saliva is also secreted during feeding that digests the components responsible for holding the plant cells together. This feeding produces white, dark, or translucent spots 1/16 to 1/8 in. in diameter on the plant's leaves, which can merge together (if there is substantial damage) forming large blotches. Entire leaves can turn brown, curl up and eventually fall off. If feeding occurs on new growth, wilting may result. The spot damage inflicted by four-lined plant bugs may be misidentified as fungal disease spots because of their comparable appearances. The agility of this bug contributes to this misidentification because when disturbed, the four-lined plant bug will drop to the ground or will hide and is therefore rarely seen. In addition, when the damaged portion of the leaf fall out, a shot hole will remain that looks similar to fungal disease.

Picture by jules_jewel of four-lined plant bug


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