Spider
Videos
Spiders are air-breathing arthropods that have eight limbs, chelicerae with fangs generally able to inject venom, and spinnerets that extrude silk. They are the largest order of arachnids and rank sev
Palystes castaneus female, dorsal aspect pedipalp trichobothria carapace of prosoma (cephalothorax) opisthosoma (abdomen) eyes AL (anterior lateral) AM (anterior median) PL (posterior lateral) PM (posterior median) Leg segments: coxa trochanter femur patella tibia metatarsus tarsus claw chelicera
Palystes castaneus female, ventral aspect. Nos 1 to 14 as for dorsal aspect. sternum of prosoma pedicel (also called pedicle) book lung sac book lung stigma epigastric fold epigyne anterior spinneret posterior spinneret Legs are labelled I, II, III, IV from anterior to posterior.
A syrphid fly captured in the web of a spider
Spider taxonomy
Videos
Spider taxonomy is the part of taxonomy that is concerned with the science of naming, defining and classifying all spiders, members of the order Araneae of the arthropod class Arachnida, which has mor
Paintings of Araneus angulatus from Svenska Spindlar of 1757, the first major work on spider taxonomy
Digitally enhanced image of a Sphodros rufipes that shows the nearly perfectly vertical orientation of the fangs, a prime characteristic of the Mygalomorphae.
Megaphobema robustum, one of the many kinds of spiders called "tarantulas"
Photograph showing orientation of the fangs of the Araneomorphae.