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Dolomedes / d ɒ l ə ˈ m iː d iː z / is a genus of large spiders of the family Dolomedidae.They are also known as fishing spiders, raft spiders, dock spiders or wharf spiders.Almost all Dolomedes species are semiaquatic, with the exception of the tree-dwelling D. albineus of the southeastern United States.
Holotype male, Lincoln University [2]. D. dondalei was known as Dolomedes III for some time before being named and described by Cor J. Vink and Nadine Dupérré in 2010. [1] [3] The male type specimen of this species is held in the Lincoln University Entomology Research Collection and was collected by Vink on Banks Peninsula, near Barrys Bay, in 2003. [4]
As an anti-predator response, air and water borne vibrations act as stimuli leading spiders to dive underwater and grab hold of a submerged substrate, such as aquatic vegetation or submerged rocks. An air capsule covers the spider, allowing the spider, if healthy, to re-emerge from the water completely dry.
They mainly eat insects, but some larger species are able to catch small fish. [10] [11] Female water spiders (Argyroneta aquatica) build underwater "diving bell" webs which they fill with air and use for digesting prey, molting, mating and raising offspring. They live almost entirely within the bells, darting out to catch prey animals that ...
You might've heard the urban legend that sleeping people swallow about eight spiders a year. The "factoid" is definitely eye-catching — but it's also improbable.
The spider's web occupies a unique biological niche: "They build their web with the orb suspended directly above a river or the water body of a lake, a habitat that no other spider can use". [4] This position allows the spiders to catch prey flying over the water, with webs observed containing up to 32 mayflies at a time. [2]
The Goliath birdeater is native to the upland rainforest regions of Northern South America: Suriname, Guyana, French Guiana, northern Brazil, eastern Colombia, and southern Venezuela. Most noticeable in the Amazon rainforest, the spider is terrestrial, living in deep burrows, and is found commonly in marshy or swampy areas. It is a nocturnal ...
Luckily, spiders eat mostly insects -- especially the ones you may also find in your home. But as spiders get bigger, so do their prey, and larger arachnids feast on lizards, birds and small mammals.