Attachment devices and the tarsal gland of the bug Coreus marginatus (Hemiptera: Coreidae)

Abstract The present ultrastructural investigation using scanning and transmission electron microscopy as well light fluorescence describes in detail the attachment devices tarsal gland of bug Coreus marginatus (L.) (Hemiptera: Coreidae). In particular, fine structure pulvilli reveals a ventral surface rich with pore channels, consistent fluid emission, folded dorsal surface, which could be useful to enhance pulvillus contact area during substrate. detailed description cells, whose is coherent an active secretory function, allows us consider plausible candidate for adhesive production. Scolopidia strictly adhering cells are also described. On basis gland, we hypothesise emission mechanism based on changes hydraulic pressure inside due unguitractor tendon movements. This provide release compression pad capillary suction, demonstrated other insects. data here reported can contribute understanding insect production, control its transport.