tiger moth: medium-sized moth with long richly colored and intricately patterned wings; larvae are called woolly bears
arctiid: stout-bodied broad-winged moth with conspicuously striped or spotted wings; larvae are hairy caterpillars
explosive trace detection: a system for screening luggage in airports; an agent passes a swab around or inside luggage and then runs the swab through a machine that can detect trace amounts of explosives