Trichobothria are elongate setae present in arachnids, various orders of insects, and myriapods that function in the detection of airborne vibrations and currents, and electrical charge. Wikipedia

Elongate seta or hair on living organisms that detects airborne vibrations and currents Wikidata

An elongate external seta, present in many arachnids and various orders of insects, including Hemiptera and Thysanoptera. They function in the detection of airborne vibrations and air currents, including near-field sounds of central importance to their hearing and communication. Wiktionary