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The infestation of the pest can result in yellowing and wilting of palms, that may lead to the death of the affected plant. The crown wilts first, and lower leaves will follow, due to damage to vascular tissue. Major symptoms such as crown loss or leaf wilt are usually only visible long after the palm has become infested.
However, white grubs (reaching 40–45 mm long when full grown) live in the soil and feed on plant roots, especially those of grasses and cereals, and are occasional pests in pastures, nurseries, gardens, and golf courses. An obvious indication of infestation is the presence of birds, such as crows, peeling back the grass to get to the grubs.
Symptoms are variable and range from stunted growth to curled young leaves. The soft tissue symptoms are more evident in spring and new leaves will reflex towards their own petioles. The affected leaves are brittle and easily fall from the plant. Fully formed leaves will appear to wilt as if the plant were water stressed.
Chalcoscelis albiguttata-pest of leaves [1] leaf eating, gelatine grub (Chalcocelis albiguttatus) [3] scale insect (Coccoidea) [1] scale insect, soft scale (Coccus sp.) [3] durian fruit borer, durian husk borer, yellow peach moth, Queensland bollworm (Conogethes punctiferalis syn. Monogatus puntiferalis and Dichocrocis punctiferalis) [1] [3]
Slugs will also eat leaves like those on hosta plants. Slugs follow their slime trails back to their homes, so you can find them this way if you want to capture and release the garden pest elsewhere.
Leaf spots are visible symptoms of virus infections on plants, and are referred to as systemic symptoms. [7] In systematic virus infections leaf spots caused by viruses show a loss of green colour in leaves, due to chlorosis which is a repression of chlorophyll development. [ 1 ]
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