chelicerata
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The biology of pseudoscorpions (<i>Pseudoscorpionida</i>).
Due to their pincers (pedipalps) pseudoscorpions (false scorpions, book scorpions; <i>Pseudoscorpionida</i>) resemble true predatory scorpions (<i>Scorpiones</i>) which are no arachnids.The biology of windspiders (<i>Solifugae</i>).
Although resembling spiders, windspiders (<i>Solifugae</i>) are moderate to large arachnids and closely related to scorpiones. Most windspiders are carnivorous feeding on small arthropods.The biology of ticks and mites (<i>Acarina</i>).
Although their phylogeny is disputed, the order <i>Acarina</i> may be divided into ticks (<i>Parasitiformes</i>) and mites (<i>Acariformes</i>).The biology of ticks (<i>Parasitiformes</i>).
Ticks (<i>Parasitiformes</i>) are external, blood-feeding parasites (ectoparasites). As such, ticks can transmit several diseases and are generally regarded as pests.The biology of scorpions (<i>Scorpiones</i>).
Scorpions (<i>Scorpiones</i>) are predatory arthropod animals with their bodies divided into the cephalothorax (prosoma) and the abdomen (opisthosoma).The biology of vinegarroons (<i>Thelyphonida</i>).
Vinegarroons (whip scorpions, <i>Thelyphonida</i>) have six legs for walking while using their modified their first two legs as antennae-like sensory organs.The biology of mites (<i>Acariformes</i>).
Mites (<i>Acariformes</i>) are the most diverse form of the Acarines. Mites occupy habitats in soil or water, and live as parasites on plants and animals.The biology of harvestmen (<i>Opiliones</i>).
Harvestmen (<i>Opiliones</i>) are invertebrate animals in the subphylum <i>Chelicerata</i> but do not belong to the spiders (<i>Araneae</i>).
