Аннотация:The sensory organs of the rostrum, tarsi, and antennae were investigated using scanning and transmission electron microscopy in 10 species from 8 aphid families (Adelgidae, Pemphigidae, Lachnidae, Anoeciidae,Thelaxidae, Callaphididae, Chaitophoridae, and Aphididae). The morphological evolution of the rhinaria was studied for the first time; its main trend is directed from simple structures (Adelgidae) to rhinaria with
additional coeloconic and spherical sensilla (Lachnidae and Anoeciidae) and those with merged sensory structures (Callaphididae and Aphididae). The apical sensory organs of the labium in Homoptera are represented only by 16 trichoid sensilla forming two symmetrical groups on the paraglossae. Apical sensilla of the rostrum are mechanoreceptors, innervated by a single sensory cell whose dendrite ends in a tubular body. The tarsal
receptor complex is more diverse: two-segmented tarsi always bear chaetoid hairs and trichoid and styloconic sen-silla.