Browntail moths returning, but scientists are working to limit their spread

Browntail moths, the invasive pests that can cause irritable rashes, breathing problems and extensive tree damage, have begun to emerge from their winter webs with experts predicting a likely repeat of last summer’s scourge. But there are reasons for optimism. Rainy conditions in May and June could support a fungus that kills browntail moth caterpillars, and researchers this summer will test several other ways to control the insect. Still, Mainers shouldn’t count on a reprieve this year, said Tom Schmeelk, an entomologist with the Maine Forest Service.