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Spider (Family Tetraghnathidae) inoculating their venom in a rare prey, a worm land.

When darkness falls, many predators that had remained hidden during the day leave their hiding places and come to find food. When we think of these animals, we tend to forget that beneath our feet are more sophisticated predators of our wildlife and in most cases, is usually measured over two or three inches long. Some made traps to catch their prey, others have poisons that can kill instantly, others inoculated paralyzing substances and enzymes that digest the soft tissues and then suck once you have completely liquefied. Some chase other animals that can double in size by killing them with their mandibles specialized.

Amaerobius sp. in his den waiting for his next victim

Spiders are all predators and perfectly represent this guild of hunters, most are solitary hunters that paralyze their prey by injecting poison with their chelicerae (Click on the first photo to view in detail.) All spiders have silk-producing glands that is used by some species to produce complex networks and also to immobilize prey once they fall into the trap. Other people, such as Licósidos, burrows and traps manufactured using to stalking. Although many are diurnal, mostly hunt at night.

centipede running down a vertical wall

Other species of centipedes are nocturnal hunters. These millipedes like spiders use powerful poisons to kill their victims. In the case of other arthropods, centipedes chase and catch the last pair of legs that have modified nails for hunting. Appendages called later by forcículas injected with a solution containing a combination of crippling poison and digestive enzymes as in the case of the spiders begin la digestión extracorporea.

Carabus ( Chrysotribax ) rutilans

Pero no todos los artrópodos cazadores son venenosos, muchos son cazadores mas "tradicionales" que provistos de fuertes mandíbulas capturan a otros invertebrados para posteriormente devorarlos. Entre estos cazadores, unos de los mas especializados son los carábidos , que son unos insectos coleópteros que en ocasiones tienen colores metálicos muy llamativos.