Arthropods, PAU-WOL
Arthropoda is the largest phylum in the animal kingdom; about 84 percent of all known species of animals fall into this category. Lobsters, crabs, spiders, mites, insects, centipedes, and millipedes are all arthropods.
Arthropods Encyclopedia Articles By Title
pauropod
pauropod, any member of the class Pauropoda (phylum Arthropoda), a group of small, terrestrial invertebrates that......
pea crab
pea crab, any member of a genus (Pinnotheres) of crabs (order Decapoda) living in the mantle cavity of certain......
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,......
pentastomid
pentastomid, any of about 100 species of tiny parasites belonging to the Pentastomida, now generally considered......
Phacops
Phacops, genus of trilobites (an extinct group of aquatic arthropods) found as fossils in Silurian and Devonian......
Phillipsia
Phillipsia, genus of trilobites (an extinct group of aquatic arthropods) uncommonly found as fossils in Carboniferous......
pill bug
pill bug, any of the terrestrial crustaceans of the families Armadillididae and Armadillidae (order Isopoda). When......
pirate spider
pirate spider, (family Mimetidae), any of around 100 species of spiders noted for their habit of eating other spiders.......
proturan
proturan, any of a group of about 800 species of minute (0.5 to 2 mm [0.02 to 0.08 inch]), pale, wingless, blind,......
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......
sand flea
sand flea, any of more than 60 terrestrial crustaceans of the family Talitridae (order Amphipoda) that are notable......
scampi
scampi, (Nephrops norvegicus), edible lobster of the order Decapoda (class Crustacea). It is widespread in the......
scorpion
scorpion, (order Scorpiones or Scorpionida), any of approximately 1,500 elongated arachnid species characterized......
sea spider
sea spider, (class Pycnogonida), any of the spiderlike marine arthropods. Sea spiders walk about on the ocean bottom......
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......
shrimp
shrimp, any of the approximately 2,000 species of the suborder Natantia (order Decapoda of the class Crustacea).......
silk spider
silk spider, any of the spiders of the genera Nephila and Trichonephila, so named because of the great strength......
skeleton shrimp
skeleton shrimp, any of certain marine crustaceans of the family Caprellidae (order Amphipoda), particularly of......
sow bug
sow bug, any of certain small, terrestrial crustaceans of the order Isopoda, especially members of the genus Oniscus.......
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
spider crab
spider crab, any species of the decapod family Majidae (or Maiidae; class Crustacea). Spider crabs, which have......
spitting spider
spitting spider, (family Scytodidae), any of around 240 species of spiders known for ensnaring their prey by spitting......
springtail
springtail, (order Collembola), any of approximately 6,000 small, primitive, wingless insects that range in length......
sunspider
sunspider, (order Solifugae), any of more than 1,000 species of the arthropod class Arachnida whose common name......
swimming crab
swimming crab, any member of the family Portunidae (order Decapoda of the class Crustacea, phylum Arthropoda).......
symphylan
symphylan, (class Symphyla), any of a group of insects that are often included with the centipedes (Chilopoda)......
tadpole shrimp
tadpole shrimp, (order Notostraca), any member of a small group of crustaceans (subclass Branchiopoda, phylum Arthropoda),......
tailless whip scorpion
tailless whip scorpion, (order Amblypygi, sometimes Phrynichida), any of 70 species of the arthropod class Arachnida......
tanaid
tanaid, any of more than 550 species of small, bottom-dwelling marine and brackish-water crustaceans constituting......
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.......
trilobite
trilobite, any member of a group of extinct fossil arthropods easily recognized by their distinctive three-lobed,......
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 flea
water flea, any member of the crustacean order Anomopoda (class Branchiopoda), a large group containing about 450......
water spider
water spider, (Argyroneta aquatica), species of aquatic spider that is the only spider known to spend nearly its......
whale louse
whale louse, (family Cyamidae), any of a small group of highly specialized peracaridan crustaceans (order Amphipoda)......
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......
Why do crabs walk sideways?
There are two aspects to this question. The first concerns the mechanics of crab motion—the how—which evolutionary......
wolf spider
wolf spider, (family Lycosidae), large family of more than 2,300 species and 135 genera of spiders named for their......