The structural diversity of sensilla on the antenna surface in caddis flies from the family Polycentropodidae was studied using scanning electron microscopy (SEM). In the representatives of the studied family, 8 types of sensilla were found. Moreover, most types of sensilla on the antennae of Polycentropodidae have a conservative structure. Mushroom pseudoplakoid sensilla, unlike most other caddisflies [2, 3], have weak modifications.