A few of the larvae do not complete development until May or June of the second year, which accounts for a small amount of girdling damage occurring in the spring. Mouthparts are for chewing. Pecan twig girdlers attack citrus, elm, hackberry, hickory, huisache, mimosa, pecan, persimmon, red oak, retama, tepehuaje, Texas ebony, walnut and various fruit trees. Twigs selected by female beetles to girdle range in diameter from 9-12 mm. Severe girdling can disfigure trees.
Damage appears mainly in late summer and fall when adult beetles are active.
Leaves on the girdled branches turn die and fall, and the branches often fall from the tree during high winds and storms. Beetles are not commonly encountered on trees. They are attracted to lights. For additional information, contact your local Texas extension service agent, or search for other state extension service offices.