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spider : any of an order (Araneae synonym Araneida) of arachnids having a short, usually unsegmented abdomen linked to the cephalothorax by the pedicel, chelicerae modified into poison fangs, and two or more pairs of spinnerets at the posterior end of the abdomen for spinning threads of silk for various uses (as in making cocoons for their eggs or webs to catch prey) — Merriam-Webster   See also   OneLook


Roget’s II (Thesaurus.com), Merriam-Webster Thesaurus, Visuwords


Spiders are air-breathing arthropods that have eight legs and chelicerae with fangs that inject venom. They are the largest order of arachnids and rank seventh in total species diversity among all other orders of organisms. Spiders are found worldwide on every continent except for Antarctica, and have become established in nearly every habitat with the exceptions of air and sea colonization. — Wikipedia

Spider (Encyclopædia Britannica)

Spiders (One Zoom)
Araneae (Catalogue of Life)
Spider (WolframAlpha)



Talks about Spiders (TED: Ideas Worth Spreading)
Articles about Spiders (Big Think)




Arachnology is the scientific study of arachnids, which comprise spiders and related invertebrates such as scorpions, pseudoscorpions, and harvestmen. Those who study spiders and other arachnids are arachnologists. — Wikipedia

Arachnology (International Society of Arachnology)

The World Spider Catalog (International Society of Arachnology)
World Spider Catalog, Version 23.5 (Natural History Museum of Bern)




History of the World Spider Catalog (International Society of Arachnology)


DDC: 595.44 Spiders (Library Thing)
Subject: Spiders (Library Thing)

Subject: Spiders (Open Library)

LCC: QL 458.4 Spiders (UPenn Online Books)
Subject: Spiders (UPenn Online Books)

LCC: QL 458.4 Spiders (Library of Congress)
Subject: Spiders (Library of Congress)

Subject: Spiders (WorldCat)




Spiders & Scorpions (Biology4Kids)

MERLOT: Multimedia Educational Resource for Learning and Online Teaching
OER Commons: Open Educational Resources



How to become an Arachnologist (Chris Buddle, Arthropod Ecology)


Association for the Promotion of Spider Research
The World Spider Catalog Association

International Society of Arachnology
American Arachnological Society
British Arachnological Society


Journal of Arachnology (American Arachnological Society)
Arachnology (British Arachnological Society)
Spiders (EurekaAlert, American Association for the Advancement of Science)
Spiders (bioRxiv: Preprint Server for Biology, Cold Spring Harbor Laboratory)
Spiders (JSTOR)
Spiders (Science Daily)
Spiders (Science News)
Spiders (Phys.org)
Spiders (NPR Archives)



Spider (USA.gov)


More News …

Spiders and Ticks News -- ScienceDaily Spiders, scorpions and ticks in the news. Learn why a spider hanging from a thread does not rotate, how spiders find a mate and how ticks carry Lyme Disease. Read about spider silk and spider webs.

  • Spider silk is spun by silkworms for the first...
    on September 20, 2023 at 3:11 pm

    Scientists have synthesized spider silk from genetically modified silkworms, producing fibers six times tougher than the Kevlar used in bulletproof vests. The study is the first to successfully produce full-length spider silk proteins using silkworms. The findings demonstrate a technique that could be used to manufacture an environmentally friendly alternative to synthetic commercial fibers such as nylon.

  • Some spiders can transfer mercury contamination...
    on September 13, 2023 at 4:27 pm

    Sitting calmly in their webs, many spiders wait for prey to come to them. Arachnids along lakes and rivers eat aquatic insects, such as dragonflies. But, when these insects live in mercury-contaminated waterways, they can pass the metal along to the spiders that feed on them. Now, researchers have demonstrated how some shoreline spiders can move mercury contamination from riverbeds up the food chain to land animals.

  • The modern sea spider had started to diversify by...
    on August 17, 2023 at 8:40 pm

    An extremely rare collection of 160-million-year-old sea spider fossils from Southern France are closely related to living species, unlike older fossils of their kind.

  • Research points to potential new medical therapy...
    on July 28, 2023 at 3:34 pm

    A medical therapy that inhibits the growth of cancer cells may one day be effective at treating Lyme disease, according to new research study.

  • New study reveals that tree species diversity...
    on July 27, 2023 at 6:39 pm

    The link between tree diversity and spider populations can help homeowners and other land managers better plan tree plantings to naturally mitigate the effects of climate change.

Phys.org - latest science and technology news stories Phys.org internet news portal provides the latest news on science including: Physics, Nanotechnology, Life Sciences, Space Science, Earth Science, Environment, Health and Medicine.

  • Saturday Citations: Cutting the middleman out of...
    on September 23, 2023 at 11:00 am

    This week, we reported on spider silk synthesis without spiders, and how policymakers are pursuing a wish-based approach to a global economy under climate change—what the kids call "manifesting" a green-growth future. Plus, black holes could be hungrier than previously believed.

  • Large fossil spider found in Australia
    on September 22, 2023 at 2:11 pm

    A team of Australian scientists led by Australian Museum (AM) and University of New South Wales (UNSW) paleontologist Dr. Matthew McCurry have formally named and described a fossil spider, Megamonodontium mccluskyi, which is between 11–16 million years old. The findings on this new genus of spider have now been published in the Zoological Journal of the Linnean Society.

  • Jewel of the forest: New electric blue tarantula...
    on September 21, 2023 at 8:07 pm

    In an exciting discovery, a new species of tarantula with electric blue coloration was found in Thailand.

  • A fossil jumping spider's 15-million-year journey
    on September 21, 2023 at 2:34 pm

    Jumping spiders (Salticidae) are a recently evolved family of spiders. They are known for their distinctive large eyes and ability to jump long distances relative to their small size. Australia has about 1,200 to 1,500 species of this spider family. Only 500 have scientific names.

  • Spider silk is spun by silkworms for the first...
    on September 20, 2023 at 3:00 pm

    Scientists in China have synthesized spider silk from genetically modified silkworms, producing fibers six times tougher than the Kevlar used in bulletproof vests.


Here are links to pages about closely related subjects.

Knowledge Realm

Terrestrial   (Earth)

Sphere Land, Ice, Water (Ocean), Air, Life (Cell, Gene)
Ecosystem Forest, Grassland, Desert, Arctic, Aquatic

Tree of Life
Microorganism Virus
Prokaryote Archaea, Bacteria
Eukaryote Protist, Fungi, Algae, Protozoa (Tardigrade)
Plant Flower, Tree
Cnidaria Coral, Jellyfish
Cephalopod Cuttlefish, Octopus
Crustacean Lobster, Shrimp
Arachnid Spider, Scorpion
Insect Ant, Bee, Beetle, Butterfly
Fish Seahorse, Ray, Shark
Amphibian Frog, Salamander
Reptile Turtle, Tortoise, Dinosaur
Bird Penguin, Ostrich, Owl, Crow, Parrot
Mammal Platypus, Bat, Mouse, Rabbit, Goat, Giraffe, Camel, Horse, Elephant, Mammoth
Walrus, Seal, Polar Bear, Bear, Panda, Cat, Tiger, Lion, Dog, Wolf
Cetacean Whale, Dolphin
Primate Monkey, Chimpanzee, Human


1.   The resources on this page are are organized by a classification scheme developed exclusively for Cosma.