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The zebra spider (Salticus scenicus) is a common jumping spider of the Northern Hemisphere.Their common name refers to their vivid black-and-white colouration, [1] whilst their scientific name derives from Salticus from the Latin for “jump”, and the Greek scenicus, translating to “theatrical” or “of a decorative place,” in reference to the flashy, zebra-like coloration of the species.
Spider behavior refers to the range of behaviors and activities performed by spiders. 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 groups of organisms [ 1 ] which is reflected in their ...
Araneus gemmoides, commonly known as the jewel spider (a name shared with Austracantha minax) and cat-faced spider (a name shared with Araneus gemma), is a common, outdoor, orb-weaver spider found in Canada and the USA. [1] It is considered harmless and has a low-toxicity venom. [2] A. gemmoides is a useful natural predator for insects. [1] [3] [4]
There are a few larger spider species, including wolf spiders and fishing spiders, that might get aggressive and bite humans if they're provoked. But bites from these spiders aren't dangerous.
Basic arrangement of spider eyes, viewed from above. Most spiders have eight eyes, which tend to be arranged into two rows of four eyes on the head region. The eyes can be categorised by their location and are divided into the anterior median eyes (AME), anterior lateral eyes (ALE), posterior median eyes (PME), and posterior lateral eyes (PLE).
A venomous spider bite (like this brown recluse bite) can cause a red or purplish rash radiating from the site of the bite. There are only a few species of spiders in the U.S. that can bite humans.
The main pair of eyes in jumping spiders even sees in color. [9] Net-casting spiders of genus Deinopis have their posterior median eyes enlarged into large forward-facing compound lenses. These eyes have a wide field of view and are able to gather available light more efficiently than the eyes of cats and owls.
These types of bites are rare, but brown recluse, black widow, and hobo spider bites can be deadly, so if you suspect one bit you, seek medical treatment immediately. You may need antibiotics ...