Representative SEM (a, b, e, f, i, j) and TEM (c, d, g, h, k, l) images of the more numerous sensilla.

<p>(a-d) Sensilla trichoidea, showing low-magnification details (a), herringbone grooves and pores [P] (b), and cross-sections of the shaft with thick-walled cuticle [P] and outer dendritic segments [ODS] with three sensory neurons (c), and of the base with three sensory neurons enclosed in a common dendritic sheath [ODS] (d). (e-h) Sensilla basiconica, showing low-magnification details (e), the numerous pores [P] (f), cross-section of the shaft with the thin-walled cuticle [P] and the dendritic branches [DB] (g), and an oblique section of the base with the ciliary constriction [CC] (h). (i-l) Sensilla auricilica, showing low-magnification details (i), the numerous pores [P] (j), cross-section of the shaft with the thin-walled cuticle [P] and dendritic branches [DB] (k), and an oblique section of the base, with two sensory neurons enclosed in a common dendritic sheath [ODS] (l). Scale bars: 10 μm (a); 2 μm (d, e, h, l); 1 μm (b, g, i, k); 500 nm (c); 200 nm (f, j).