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Legs. d1 Coxa. d2 Trochanter. d3 Femur. d4 Tibia. d5 Tarsi. d6 Calcaria or Spurs. d7 Unguiculi or claws. d8 Pulvillus. e Front wing.

Pressure plate: a structure at base of pulvillus, which exerts a pressure on the sole of the pad.

Arolium -ia: cushion-like pads on the tarsi of many insects: one of the lobes of the pulvillus; in Orthoptera, used only for the terminal pad between the claws: see empodium; pulvillus; palmula; plantula; onychium, paronychium, pseudonychium.

Empodium: Diptera; the small process between the pulvilli: in Coleoptera; the bifid pseudotarsi between the claws: used also as = pulvillus; and see arolium, onychium, palmula, paronychium, plantula, pseudonychium and pulvillus.

Pad: the pulvillus, or that part of it which is capable of extension and retraction in some Coleoptera.