Mechanical Attachment Devices

摘要: Rigid cuticular structures that generate high friction by mechanical interlocking with substrate protuberances are the most abundant attachment devices in arthropods. Here we review different types of such arachnids. The claws appendages primarily to increase foothold on walking and climbing substrates, but may also be important means prey capture, which often comes structural modifications. Claws supported spines microtrichia, all have tip diameters. Such a set differently sized broad range roughness from very fine rather coarse. Other examples mechanisms hooks platelets body parts, some genital sealing (mating plugs), silk threads surfaces. Clamps pincers muscle-driven devices, capture food handling: chelicerae, pedipalpal chelae scorpions pseudoscorpions, raptorial legs (spinated or pedipalps for capture), cucullus (‘hood’) Ricinulei. expansion anchors first pierced into substrate, as cuticle, plant epidermis host skin, interlocked there. They represented specialized mouth parts. Lock-and-key is system, two specific co-adapted interlock each other. can found copulation organs. Wrapping around an effective attachment, it highly enhance action friction. This mechanism frequently used long-legged harvestmen, when thin cylindrical surfaces like grass herb stems. It further utilized spiders tightly wrap their silk.