Residents of New Orleans are witnessing a notable increase in buck moth populations, particularly since mid-December 2023. This phenomenon points toward a potential surge in buck moth caterpillars as spring approaches. Understanding the lifecycle and behavior of these insects is essential for residents, especially those with oak trees in their yards.
Lifecycle and Behavior of Buck Moths
Adult buck moths emerge from underground pupation around late November to December, displaying distinctive charcoal black-and-white wings with rusty orange abdomens. Once they surface, the mating process begins swiftly, with females laying clusters of 80 to 100 eggs on small twigs of oak trees, particularly live oak and water oak. By mid- to late-February, the eggs hatch, and the caterpillars begin to consume the leaves of these trees.
The caterpillars grow rapidly over a period of six to eight weeks, reaching lengths of approximately 3 inches by mid-April. As they mature, they descend from the trees in search of suitable ground locations to pupate, often traversing lawns, porches, and sidewalks. This can pose a risk to those who come into contact with them, as the caterpillars are known to sting when disturbed.
Implications for Local Residents
The current adult buck moth population in some neighborhoods suggests a significant increase in caterpillar numbers this spring. Residents who observed a large number of caterpillars last spring should take proactive measures. It is advisable to have oak trees treated with insecticides in March to mitigate the risks associated with the caterpillars descending to the ground. Commercial tree services are recommended for larger trees.
While the buck moths themselves do not sting, the caterpillars can cause painful reactions upon contact. Therefore, caution is advised, especially for families with young children.
In summary, the surge in buck moths in New Orleans indicates that residents should prepare for a potentially large outbreak of caterpillars in the coming months. By understanding their lifecycle and taking preventive measures, homeowners can manage the impact of these insects on their properties.
