Sawdust visible coming out of trunk. Trees may be chlorotic and have sparse foliage. First beginning in February and ending in April, and another form June until August. Sometimes a third flight period might occur in October and November. Very important to spray entire tree when trying to control the moth.
New growth looks chlorotic.
Sometimes plant sap will be oozing from the trunk. Bald Cypress, Cryptomeria. Apply insecticide to new growth. Comes through the leaves and bark. Sudden death to a single branch.