trichomes

trichomes also trichodes (noun, plural; Greek thrix, hair): 1. (Arthropoda: Insecta) Modified tufts or hair on certain myrmecophilous and non-myrmecophilous insects that aid in the dissemination of appeasement or pheromone substances.

2. (Arthropoda: Diplopoda) Hollow spines or setae of the bristly millipedes.