Despite their intimidating appearance, the giant yellow and blue-black spiders spreading across the Southeastern U.S. owe their survival to a surprising trait: They're rather timid.
Plants & Animals
May 16, 2023
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A small team of researchers with members from Thailand, Finland and China, has found that there is a very large and active trade in arachnids across the internet. In their paper published in the journal Communications Biology, ...
Blue-blooded and armored with 10 spindly legs, horseshoe crabs have perhaps always seemed a bit out of place.
Evolution
Mar 9, 2019
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Funnel-web spider venom contains powerful neurotoxins that instantly paralyze prey (usually insects). Millions of years ago, however, this potent poison was just a hormone that helped ancestors of these spiders regulate sugar ...
Plants & Animals
Jun 11, 2015
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A stunning video based on fossils of a 410-million-year-old arachnid – one of the first predators on land – recreates the animal walking.
Archaeology
Jul 8, 2014
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Two new species of cave-dwelling short-tailed whipscorpions have been discovered in northeastern Brazil, and are described in research published May 22 in the open access journal PLOS ONE by Adalberto Santos, from the Federal ...
Plants & Animals
May 22, 2013
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Two Canadian scientists have undertaken the challenging task to bring up to date the catalogues written by one of the most passionate collectors of beetles, Coleoptera, in the 19th century, Pierre Dejean. Dr. Yves Bousquet ...
Plants & Animals
Apr 2, 2013
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In evolutionary biology, there is a deeply rooted supposition that you can't go home again: Once an organism has evolved specialized traits, it can't return to the lifestyle of its ancestors.
Evolution
Mar 8, 2013
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It appeared Bono and arachnids didn't mix when his "Spider-Man" musical had a rough Broadway run, but that didn't keep a biologist from naming an actual spider species after the U2 singer.
Plants & Animals
Jan 19, 2013
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An international team of researchers has carried out a survey of the biological diversity in a tropical rainforest. Their efforts have helped them find the key to one of the existential questions to which people have long ...
Ecology
Jan 8, 2013
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Arachnids are a class (Arachnida) of joint-legged invertebrate animals in the subphylum Chelicerata. All arachnids have eight legs, although in some species the front pair may convert to a sensory function. The term is derived from the Greek words ἀράχνη (aráchnē), meaning "spider".
Almost all extant arachnids are terrestrial. However, some inhabit freshwater environments and, with the exception of the pelagic zone, marine environments as well. They comprise over 100,000 named species, including spiders, scorpions, harvestmen, ticks, mites and Solifugae.
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