Fig. 11

Epidermal glands with stalked ducts in Strigamia maritima and Henia vesuviana. a Ultimate leg podomeres of male S. maritima. View from ventral; medial to the right. The ultimate leg is intensively covered with stalked ducts of numerous epidermal glands, except for the medial side, which is mostly smooth. b A group of stalked ducts of epidermal glands at the transition of tibia and tarsus 1. Due to usage of backscattered electrons for SEM analysis, the large pores are clearly visible. Note the single trichoid sensillum at the bottom left (with pointed apex). Stalked ducts of epidermal glands display a round socket with radially ribbed surface structure. Frequently, small pores of flexo-canal epidermal glands are present. c Magnification of a stalked duct (backscatter electron analysis). The arrow points to the large pore. d Ultimate leg podomeres (lateral tibia) of male H. vesuviana. View from ventral; medial to the bottom. Stalked ducts of numerous epidermal glands densely cover the ultimate leg. e Detail of tarsus 2 (backscatter electron analysis). Only few trichoid sensilla are present, but clearly detectable by their socket structure (arrows). Stalked ducts of epidermal glands possess a round socket. In this species, the tips of the stalks appear slightly compressed. Frequently, small pores of flexo-canal epidermal glands are present. Abbreviations: fceg pores of flexo-canal epidermal glands, fe femur, m medial, st sensillum trichodeum, ta1 tarsus 1, ti tibia