Morphology of the integumentary structures in the nymph of lace bug, Stephanitis typica (Hemiptera: Tingidae)

The nymphs of the lace bug Stephanitis typica possess unsegmented, slender, integumentary processes. They are arranged chiefly in three rows on the mid-dorsal and lateral sides. The surface ultrastructure of the integumentary process reveals three types of sensilla, namely, companiform sensilla at the tip of the integumentary process having a probable proprioceptive function, oar-shaped wind and gravity sensilla, and pegs supposed to be hygroscopic.