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The arachnids, are a class (Arachnida) of joint-legged invertebrate animals in the subphylum Chelicerata. Arachnids are named after the mythological figure Arachne. They are chiefly terrestrial arthropods, comprising some 65,000 to 73,000 named species including spiders, scorpions, harvestmen, ticks, and mites.
Arachnids may be easily distinguished from insects by the fact that arachnids have eight legs whereas insects have six. The chelicerae serve to macerate food particles. The first post-oral pair of appendages —pedipalps (leg-like mouthparts) — of some species have been adapted for sensory, prey capture or reproductive functions. In Solifugae, the palpi are quite leg-like and make Solifugae appear to have ten legs. The larvae of mites have only six legs; the fourth pair appears when they moult into nymphs. Arachnids are further distinguished by the fact they have no antennae and no wings. They have a two-segmented body, made up of a cephalothorax and an abdomen, the cephalothorax being derived from the fusion of the cephalon (head) and the thorax.
Arachnids are mostly carnivorous, feeding on the pre-digested bodies of insects and other small animals. Many are venomous - they secrete poison from specialized glands to kill prey or enemies. Others are parasites, some of which are carriers of disease. Arachnids usually lay eggs, which hatch into immature adults.
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What's Hot ~ What Are Arachnids?: The class Arachnida includes a diverse group of arthropods: spiders, scorpions, t... http://bit.ly/7aLYSz
AboutInsects (AboutInsects) Tue, 15 Dec 2009 16:28:38 -0000
What's Hot ~ What Are Arachnids?: The class Arachnida includes a diverse group of arthropods: spiders, scorpions, t... http://bit.ly/7aLYSz
Alice Cooper - The Black Widow (Speech) - Moving to the next aisle we have arachnida, the spiders, ourâ¦finest... http://tumblr.com/xc54n37np
diositos (diOsito) Sat, 12 Dec 2009 20:44:39 -0000
Alice Cooper - The Black Widow (Speech) - Moving to the next aisle we have arachnida, the spiders, our…finest... http://tumblr.com/xc54n37np
Nematoda,mollusca,fasciola hepatica,antrophoda kls insecta,arachnida,hemi sama holometabolaSorry rey td lupa tulis ini di email :D @reyreina
etthania (virnie marethania) Wed, 09 Dec 2009 09:07:20 -0000
Nematoda,mollusca,fasciola hepatica,antrophoda kls insecta,arachnida,hemi sama holometabolaSorry rey td lupa tulis ini di email :D @reyreina
Baboon spiders of South Africa - A short article of the online magazine Science in Africa that describes the South African baboon spiders (tarantulas) and gives a paragraph of more detailed information on the better known genera of these spiders. It includes some low-resolution pictures of baboon spiders, references and links.
Meta Description: [ Africa's first online science magazine ]
Checklists, images, identification guides, and maps of Arachnida - From the Discover Life website: images, checklists, identification keys and maps of Arachnida.
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Collecting daddy-longlegs - A short page of the Discover Life in America website that lists instructions and recommendations on collecting Opiliones (Daddy-longlegs spiders). This page was written for Great Smoky Mountains National Park volunteer collectors.
The Hobo Spider - A fairly complete site about Tegenaria agrestis, the aggressive Hobo Spider, with information on the natural history of this spider, bite treatment, prevention and control and several photographs.
The Official Brown Recluse Spider website - A vast amount of information about the brown recluse spider and its bite: symptoms, treatment, pictures of bites and notes on behavior and habitat.
Meta Description: [ Brown recluse spider, bite, picture, photo, treatment, symptom, trap, spider bite while human sleeping ]
The Tarantula's Burrow - Searchable databases about tarantulas and scorpions. Images, FAQs, care sheets, related cartoons, games, articles related links, and additional information about other spiders, snakes, and snails.
Meta Description: [ Home of the Tarantula's Burrow and Alt.Pets.Arachnids, here you will find just about anything related to Spiders (Tarantulas, Scorpions etc.), Snakes and Snails. ]
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