It’s the time of year to keep your eyes peeled for browntail moth webs, as they’re more active as the weather warms.

Invasive browntail moth caterpillars have been found at ... In New England, the risk of exposure to the caterpillars’ hairs is greatest from April to July. But the toxin in their hair can ...

Browntail moth caterpillars on oak leaves at Wolfe's Neck ... They have tiny, barbed hairs, which they shed when they molt. Angela Mech: And they have a toxin within the hair that causes a poison ...