Arachnids, 9 O-WOL
When it comes to creepy-crawlies, arachnids are some of the first critters that might come to mind. This arthropod group includes spiders, daddy longlegs, and scorpions, among other creatures that many of us would prefer to avoid.
Arachnids Encyclopedia Articles By Title
9 of the World’s Deadliest Spiders
More than 51,500 different species of spiders are found in the world. Of these, only a small number are said to......
acarid
acarid, (subclass Acari or Acarida or Acarina), any member of the subgroup of the arthropod class Arachnida that......
arachnid
arachnid, (class Arachnida), any member of the arthropod group that includes spiders, daddy longlegs, scorpions,......
Are daddy longlegs the most venomous spiders?
This question comes from a popular urban legend and gets a couple of things wrong. First, true daddy longlegs are......
Australian funnel-web spider
Australian funnel-web spider, (family Atracidae), any of about 35 species and three genera of spiders native to......
Bagheera kiplingi
Bagheera kiplingi, species of jumping spider noted for its largely plant-based diet. The herbivorous nature of......
black widow
black widow, (genus Latrodectus), any of about 30 species of comb-footed spiders distinguished by an hourglass-shaped......
bolas spider
bolas spider, (genus Mastophora), genus of about 50 species of New World spiders known for the particular hunting......
brown recluse
brown recluse, (Loxosceles reclusa), species of venomous light tan or yellow spider most common in the western......
California trapdoor spider
California trapdoor spider, (Bothriocyrtum californicum), species of large, burrowing North American spider endemic......
chigger
chigger, (suborder Prostigmata), the larva of any of approximately 10,000 species of mites in the invertebrate......
comb-footed spider
comb-footed spider, (family Theridiidae), any of more than 2,500 species and around 130 genera of spiders distributed......
crab spider
crab spider, (family Thomisidae), family of spiders that are crablike in shape and, like many crabs, often walk......
curtain-web spider
curtain-web spider, (family Dipluridae), any member of a family of more than 150 species of mostly tropical spiders......
daddy longlegs
daddy longlegs, (order Opiliones), any of more than 6,650 species of arachnids (class Arachnida) that are known......
desert tarantula
desert tarantula, (Aphonopelma chalcodes), large hairy North American spider native to arid regions of Arizona,......
Do We Really Swallow Spiders in Our Sleep?
The belief that we swallow an average of eight spiders in our sleep every year has become so ingrained in popular......
false scorpion
false scorpion, any of the 1,700 species of the order Pseudoscorpiones (sometimes Chelonethida) of the arthropod......
folding-door spider
folding-door spider, (family Antrodiaetidae), small family of nearly 40 species and four genera of large burrowing......
funnel weaver
funnel weaver, (family Agelenidae), large family of more than 1,000 species and nearly 100 genera of spiders known......
garden spider
garden spider, (Araneus diadematus), a member of the orb weaver family Araneidae (order Araneida) characterized......
giant huntsman spider
giant huntsman spider, (Heteropoda maxima), massive cave-dwelling spider, sporting the largest leg span of any......
Goliath birdeater
Goliath birdeater, (Theraphosa blondi), South American tarantula that is widely considered to be the largest known......
How do spiders make circular webs?
Spiders are a diverse group of arachnids, with over 51,500 identified species. While not all spiders spin webs,......
How long can ticks live without food?
Ticks are parasitic, blood-feeding arachnids with more than 800 species worldwide. They are remarkably resilient......
How many eyes does a spider have?
Spiders typically have eight eyes, although some species may have fewer. The number and arrangement of eyes can......
Joro spider
Joro spider, (Trichonephila clavata), large and visually striking orb weaver spider. Native to Asia, including......
jumping ant spider
jumping ant spider, (Myrmarachne formicaria), species of jumping spider that mimics a redwood ant (Formica rufa)......
jumping spider
jumping spider, (family Salticidae), any of more than 6,000 species of spiders (order Araneae) known for their......
list of spiders
Spiders (order Araneae) are a group of arachnids that includes more than 50,000 species known to science. All spiders......
lone star tick
lone star tick, (Amblyomma americanum), species of North American hard tick capable of transmitting a number of......
lynx spider
lynx spider, (family Oxyopidae), any of nearly 450 species of active spiders that do not build a nest or web but......
mite
mite, any of numerous species of tiny arthropods, members of the mite and tick subclass Acari (class Arachnida),......
Nine Incredible Jumping Spiders
Get ready to leap into the dazzling world of jumping spiders! The jumping spider family, Salticidae, is the largest......
nursery-web spider
nursery-web spider, (family Pisauridae), any member of a family of spiders noted for the female spider’s habit......
ogre-faced spider
ogre-faced spider, (family Deinopidae), small family of spiders so named for the fact that one of their pairs of......
orb weaver
orb weaver, any spider of the family Araneidae (Argiopidae or Epeiridae) of the order Araneida, a large and widely......
peacock spider
peacock spider, (genus Maratus), genus of nearly 100 species of small, predominantly Australian jumping spiders......
pelican spider
pelican spider, (family Archaeidae), ancient family of nearly 30 species and five genera of spiders found in Madagascar,......
pirate spider
pirate spider, (family Mimetidae), any of around 100 species of spiders noted for their habit of eating other spiders.......
purseweb spider
purseweb spider, (family Atypidae), family of about 50 species and three genera of stout-bodied burrowing spiders.......
ravine trapdoor spider
ravine trapdoor spider, (Cyclocosmia truncata), species of rare and distinctively shaped North American spider.......
ray spider
ray spider, (family Theridiosomatidae), any of a family of around 175 species of spiders known for their conelike......
red spider
red spider, any of the plant-feeding mites of the family Tetranychidae (subclass Acari). Red spiders are a common......
redback
redback, (Latrodectus hasselti), species of black widow spider that is native to Australia, the females of which......
sac spider
sac spider, (family Clubionidae), widespread family of nearly 700 species of nocturnal spiders. that build silken......
scorpion
scorpion, (order Scorpiones or Scorpionida), any of approximately 1,500 elongated arachnid species characterized......
segmented spider
segmented spider, (suborder Mesothelae), any of more than 100 species of ancient burrowing spiders that form the......
sheet-web weaver
sheet-web weaver, (family Linyphiidae), family of nearly 5,000 species of rather common small spiders. Most are......
silk spider
silk spider, any of the spiders of the genera Nephila and Trichonephila, so named because of the great strength......
spider
spider, (order Araneae), any of more than 51,500 species of arachnids that differ from insects in having eight......
- Introduction
- Arachnid, Size, Range
- Predator, Web-building, Venom
- Internal features
- Nervous System, Senses, Arachnid
- Reproduction, Silk, Venom
- Venom, Silk, Predators
- Reproduction, Life Cycle, Molting
- Mating, Reproduction, Courtship
- Egg Sacs, Reproduction, Anatomy
- Prey Capture, Venom, Web-Building
- Webs, Silk, Predators
spitting spider
spitting spider, (family Scytodidae), any of around 240 species of spiders known for ensnaring their prey by spitting......
sunspider
sunspider, (order Solifugae), any of more than 1,000 species of the arthropod class Arachnida whose common name......
tailless whip scorpion
tailless whip scorpion, (order Amblypygi, sometimes Phrynichida), any of 70 species of the arthropod class Arachnida......
tarantula
tarantula, (family Theraphosidae), any of more than 1,000 species and some 160 genera of hairy and generally large......
tick
tick, (order Ixodida), any of about 970 species of invertebrates in the order Ixodida that are obligate, blood-feeding......
trapdoor spider
trapdoor spider, any of numerous species of large bodied, burrowing spiders found across several taxonomic families.......
turret spider
turret spider, (Atypoides riversi), species of small burrowing spider endemic to California, one of the best-known......
Types of Spiderwebs
Web-weaving spiders are master architects of the natural world, instinctively creating intricate structures that......
varroa mite
varroa mite, (Varroa destructor), species of parasitic mite that is a serious pest of the western honeybee (Apis......
wandering spider
wandering spider, (family Ctenidae), family of more than 600 species and nearly 50 genera of large, nocturnal spiders......
water spider
water spider, (Argyroneta aquatica), species of aquatic spider that is the only spider known to spend nearly its......
What is the largest spider in the world?
There are two spiders that can claim this title, depending on the measurement you’re curious about. The goliath......
whip scorpion
whip scorpion, (order Uropygi, sometimes Thelyphonida), any of approximately 105 species of the arthropod class......
Why are people afraid of spiders?
People are often afraid of spiders, unsettled by the animals’ many legs and eyes, their sometimes rapid and unpredictable......
wolf spider
wolf spider, (family Lycosidae), large family of more than 2,300 species and 135 genera of spiders named for their......