Best answer: avoid being on the AT in New England in June. If I have to, I'll start taking afternoon siestas on next year's through-hike to delay getting into New England until mid-July. I've got plenty of public domain classics to read on my phone.
Second best answer: full coverage protection. Wear a mosquito net over your head, with a wide-brim sun hat underneath to prevent the mesh from dragging on your sweaty skin. A long-sleeve wicking T-shirt. And, finally getting to the topic, gloves. I use janitor's gloves because they're cheap, lightweight, and have snug wrist cuffs that make a seal over the shirt cuffs. Also they've got polyurethane palms to give you a firm grip on your trekking poles when you're dripping sweat.
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