arachnida
Eight-legged arthropod class
Arachnida is the class of arthropods that includes spiders, scorpions, ticks, and mites.
Members are distinguished from insects by having eight legs rather than six, and bodies divided into two segments rather than three.
The museum's invertebrate collection featured specimens from class Arachnida.
The singular arachnid is more common in general usage.
Web-spinning arachnid
- scorpionStinging arachnid with pincers
- tickParasitic eight-legged pest
- miteMinuscule arachnid parasite
- harvestmanLong-legged arachnid, not spider
class · arthropod · cephalothorax · abdomen · exoskeleton · invertebrate · phylum · order
Biological-origin harm agent
- bitePierce with teeth
- stingSharp wound from insect
- neurotoxinPoison attacking neural tissue
- antiveninSerum neutralizing toxic bites
envenomation · black widow · brown recluse · deathstalker · hemotoxic · cytotoxic · necrosis · anaphylaxis
Interwoven filament structure
- draglineHeavy digging machine
- cobwebAbandoned spider silk
- gossamerFilmy, delicate material
- threadFiber for stitching
tensile · protein · spigot · ballooning · egg sac · radial · trap · anchor
Organism that consumes others
- preyAnimal being hunted
- ambushSurprise strike from concealment
- burrowAnimal's dug dwelling
- nocturnalActive during darkness
habitat · desert · forest · cave · terrestrial · carnivore · pest control · food web
Silk-extruding spider organs
- book lungsLayered arachnid respiratory structures
- fangsSharp piercing teeth
- venom glandsToxin-producing anatomical structures
- carapaceProtective dorsal exoskeleton
spider
Web-spinning arachnid
- scorpionStinging arachnid with pincers
- tickParasitic eight-legged pest
- miteMinuscule arachnid parasite
harvestman · class · arthropod · cephalothorax · abdomen · exoskeleton · invertebrate · phylum · order · family
toxin
Biological-origin harm agent
- bitePierce with teeth
- stingSharp wound from insect
- neurotoxinPoison attacking neural tissue
antivenin · envenomation · black widow · brown recluse · deathstalker · hemotoxic · cytotoxic · necrosis · anaphylaxis
web
Interwoven filament structure
thread · tensile · protein · spigot · ballooning · egg sac · radial · trap · anchor · funnel web
predator
Organism that consumes others
nocturnal · habitat · desert · forest · cave · terrestrial · carnivore · pest control · food web · ecosystem
spinnerets
Silk-extruding spider organs
- book lungsLayered arachnid respiratory structures
- fangsSharp piercing teeth
- venom glandsToxin-producing anatomical structures
carapace · eyes · setae · molt · cuticle · spiracles · tracheae