Risultati di ricerca
Spiders (order Araneae) 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 seventh in total species diversity among all orders of organisms.
Updated counts (Araneae) Edited and regularly updated by Paolo Pantini and Marco Isaia.
Spiders found in Italy include 11 unique species from confirmed sightings by contributing members of Spider ID. It is important to remember that spiders seen in Italy are not bound by the territorial lines decided on by humans, therefore their distribution is subject to change.
29 mag 2024 · Spider, any of more than 46,700 species of arachnids that differ from insects in having eight legs rather than six and in having the body divided into two parts rather than three. All spiders are predators, feeding almost entirely on other arthropods, especially insects.
- Harmful Spiders?
- How Spiders Eat and Hunt
- Threats
For most people, the thought of spiders conjures up images of tarantulas, wolf spiders, and other (seemingly) fearsome creatures. Though all spiders have venom to one degree or another, only a handful are dangerous to humans. Those include the black widowand the brown recluse, both found in the United States. The vast majority of spiders are harmle...
Most species are carnivorous, either trapping flies and other insects in their webs, or hunting them down. They can’t swallow their food as is, though—spiders inject their prey with digestive fluids, then suck out the liquefied remains. Though not all spiders build webs, every species produces silk. They use the strong, flexible protein fiber for m...
The greatest threat to spiders is habitat loss, although some spider species are also threatened by the pet trade.
- 2 min
Everything you should know about the Spider. All Spiders are arachnids, and there are nearly 50,000 species, each with eight legs and tiny fangs.
30 mag 2021 · From spiders with superpowers to spiders with 25m webs, we look back at some of our favourite arachnid moments from the BBC Earth Archive.
- 18 min
- 6,7M
- BBC Earth
