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About Control of Citrus Pest Aphids
Heteropteridae is a family of true bugs, commonly known as shield bugs or stink bugs. One of the most harmful species in this family is the citrus red mite (Eutetranychus banksi), also referred to as the orange tart or orange bifurcation mite. These pests come in two forms: winged and wingless. The winged adults of the orange pod mite measure about 1.2 mm in length, with a glossy black body, red and black compound eyes, gray-brown antennae, and two pairs of colorless, transparent wings. Wingless adults are similar in appearance but lack wings entirely. The winged form of the orange bifurcation mite is slightly larger, reaching up to 2.5 mm, with a dark brown body and clear, transparent wings. The wingless variant is smaller, around 2 mm long, nearly circular in shape, and has a web-like structure on the abdomen and thorax.
Both adults and nymphs feed in clusters on young shoots, tender leaves, and flowering fruit, sucking sap from the plant. This feeding activity weakens the plant and can lead to the development of sooty mold disease, which further harms the health of citrus trees.
Control methods include:
1. During winter or early spring, prune infested branches and remove egg-laying sites to reduce the population.
2. Encourage the presence of natural predators such as ladybugs, lacewings, predatory mites, and certain types of ants that feed on these mites.
3. Apply insecticides such as 50% carbaryl wettable powder diluted 500–1000 times, 2.5% kungfu EC diluted 5000 times, or 50% vanillin emulsion diluted 1000–2000 times for effective control.
Regular monitoring and integrated pest management practices are essential to keep these pests under control and protect citrus crops from damage.