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Scouting Citrus for Pests - Page 14
Adults root weevils feed on young flush and eggs are laid in adjacent older flush, sandwiched between two leaves. Within 2 weeks eggs hatch and the “neonate” larvae drop to the ground and dig in to search for feeder roots. Larvae feed on successively larger roots as they develop over a period of from 4 months to a year or more. They pupate in the soil emerge when conditions are favorable. Diaprepes is the largest and most damaging of the root weevils and can best be detected by inspecting young flush in late spring and early summer. Monitoring populations trends is important to optimize application timing and can best be done with the “Tedders” pyramidal trap. This consists of 2 interlocking triangular vanes topped with a screen cone “boll
weevil” trap. Weevils emerging from the soil are looking for a dark silhouette indicating a tree trunk, and mistakenly climb up through a hole in the screen cone.
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