Other Insects and Spiders

Life Cycle

New Orleanians recognize the “stinging” caterpillar that feed on the leaves of Live Oak trees (left). The caterpillars hatch from eggs laid in the tops of these trees the previous fall.  As the caterpillars grow larger they occasionally drop out of the trees or crawl down the trucks to the ground to complete their development by burrowing into the soil. There they transform into pupae and develop into adult moths.  Their common name “Buck moth” was given since they often emerge at the beginning of deer hunting season.

Prevention

Spraying an infested tree need to be done early in the season when the caterpillars are small.  Contact local tree companies or the local non-profit Parkway Partners, which offers limited reduced-cost spraying through its Save Our Trees program.

Wrapping a tree in foil will not prevent the caterpillars from infesting a tree since the adult moths fly to the tree tops to lay their eggs. Oak trees generally recover from a heavy infestation of caterpillars and the season usually lasts from a few weeks to 2 months.

Stings

The caterpillars have multi-branched urticating spines, which deliver a sting when touched. Adhesive tape can be used to pull out some of the broken spines from the sting area and washing the area with soap and water may help remove the irritating venom. Application of an ice pack or baking soda may help to reduce pain and prevent swelling. See a physician if severe reactions occur.

The Board treats green spaces including parks and parade routes for red imported fire ants (RIFA). These ants can seriously injure people and cause a terrible nuisance during Mardi Gras and other public events.