Steven David Miller / Badge Huntsman spider (Neosparassus) sitting on tree trunk, detail of eyes, palps, mouth parts, Undara Volcanic National Park, North Queensland, Australia

Stephen Dalton / Garden spider (Araneus diadematus) sequence of three images showing palps used for web control, UK

Stephen Dalton / Zebra spider (Salticus scenicus) male with enlarged chelicerae, UK, Salticidae

Stephen Dalton / Slender orb / Long jawed orb weaver spider (Tetragnatha extensa) close up showing enlarged chelicerae of male, UK, Tetragnathidae

Stephen Dalton / Underside of Sac spider (Clubiona corticalis) viewed through a window-pane, UK

Stephen Dalton / Ladybird spider (Eresus cinnaberinus) testing Woodlouse prey with its palps, Dorset, UK. In England this extremely rare spider has a habitat confined to a quarter acre patch in Dorset, and the male on...

Stephen Dalton / Jumping spider (Salticus scenicus) male showing large palps, UK, Salticidae

Stephen Dalton / Triangle web spider (Hyptiotes paradoxus) male on web, note its large palps, UK, Uloboridae

Bernard Castelein / Nursery web spider (Pisaura mirabilis) head portrait showing palps, Belgium

Kerstin Hinze / Portrait of European Mole Cricket (Gryllotalpa gryllotalpa) showing fossorial (modified for digging) legs, Zagrazden, Bulgaria

Piotr Naskrecki / Jumping Spider (Phiale formosa) showing multiple eyes and palps, Costa Rica

PREMAPHOTOS / Male Nursery web spider charging palps with sperm before mating {Pisaura mirabilis} UK

PREMAPHOTOS / Garden Spider male charging his palps from his sperm web (Araneus diadematus) UK

Mark Moffett / Tarantula (Theraphosidae) male's palps, special mouthparts used for mating, Arizona

Mark Moffett / Nevada Blackfoot Tarantula (Aphonopelma iodium) male secures the female's fangs and bends her backwards pushing his sperm-filled palps into her reproductive slit, northern Arizona

Premaphotos / Four-spot orb weaver spider (Araneus quadratus) male showing his complex palps used in mating, UK

Premaphotos / Spotted wolf spider (Pardosa amentata) male semaphoring to a female (off picture on the left) with his black palps during courtship, UK

Premaphotos / Buzzing spider (Anyphaena accentuata) male tapping his palps and abomen on a female's lair under oak leaves during courtship, UK

Premaphotos / Buzzing spider (Anyphaena accentuata) male tapping his palps and abomen on a females lair under oak leaves during courtship, UK

Premaphotos / Spotted wolf spider (Pardosa amentata) male (right) semaphoring to a female with his black palps during courtship, UK

Premaphotos / Daddy-long-legs / Rafter spider (Pholcus phalangioides) mating pair clearly showing the inflated male palps, UK