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Types of Arachnids

Acari​
Acari​

Almost all adult arachnids have eight legs, and arachnids may be easily distinguished from insects by this fact, since insects have six legs. However, arachnids also have two further pairs of appendages that have become adapted for feeding, defense, and sensory perception.

image: ftp.funet.fi
Attercopus ​Fimbriunguis​
Attercopus ​Fimbriunguis​

Attercopus fimbriunguis (Shear et al., 1987) Attercopus is an extinct genus of arachnids, containing one species Attercopus fimbriunguis, known from a Devonian-aged fossil.

Dipluridae​
Dipluridae​

The family Dipluridae, known as curtain-web spiders (or confusingly with other distantly related ones as funnel-web tarantulas) are a group of spiders in the infraorder Mygalomorphae, that have two pairs of booklungs, and chelicerae (fangs) that move up and down in a stabbing motion.

Harvestmen​
Harvestmen​

Predators of harvestmen include a variety of animals, including some mammals amphibians and arachnids like spiders and scorpions,. Opiliones display a variety of primary and secondary defenses against predation, that range from morphological traits such as body armour, behavioral responses to chemical secretions.

Microscorpions​
Microscorpions​

List of arachnids: The arachnids (class Arachnida) are an arthropod group that includes spiders, daddy longlegs, scorpions, mites, and ticks as well as lesser-known subgroups.

Plesiosiro​
Plesiosiro​

Plesiosiro is a genus of extinct arachnid that includes one species that has been found to inhabit the United Kingdom, although there is some dispute about the exact location where the species was found.

source: study.com
image: flickr.com
Pseudoscorpion​
Pseudoscorpion​

A pseudoscorpion, also known as a false scorpion or book scorpion, is an arachnid belonging to the order Pseudoscorpiones, also known as Pseudoscorpionida or Chelonethida. Pseudoscorpions are generally beneficial to humans since they prey on clothes moth larvae, carpet beetle larvae, booklice, ants, mites, and small flies.

image: flickr.com
Ricinulei​
Ricinulei​

The order Ricinulei is a group of arachnids known as hooded tickspiders, though they are not true spiders. Like most arachnids, they are predatory, eating small arthropods. In older works they are sometimes referred to as Podogona.

Schizomida​
Schizomida​

Almost all adult arachnids have eight legs, and arachnids may be easily distinguished from insects by this fact, since insects have six legs. However, arachnids also have two further pairs of appendages that have become adapted for feeding, defense, and sensory perception. The first pair, the chelicerae, serve in feeding and defense.

Scorpion​
Scorpion​

Almost all adult arachnids have eight legs, and arachnids may be easily distinguished from insects by this fact, since insects have six legs. However, arachnids also have two further pairs of appendages that have become adapted for feeding, defense, and sensory perception.

Spider​
Spider​

Almost all adult arachnids have eight legs, and arachnids may be easily distinguished from insects by this fact, since insects have six legs. However, arachnids also have two further pairs of appendages that have become adapted for feeding, defense, and sensory perception.

image: reddit.com
Sun Spiders​
Sun Spiders​

Solifugae is an order of animals in the class Arachnida known variously as camel spiders, wind scorpions, sun spiders, or solifuges. The order includes more than 1,000 described species in about 153 genera. Despite the common names, they are neither true scorpions (order Scorpiones) nor true spiders (order Araneae).

Tailless Whip ​Scorpions​
Tailless Whip ​Scorpions​

Tailless whip scorpion, (order Amblypygi, sometimes Phrynichida), any of 70 species of the arthropod class Arachnida that are similar in appearance to whip scorpions (order Uropygi) but lack a telson, or tail.

Thelyphonida​
Thelyphonida​

Almost all adult arachnids have eight legs, and arachnids may be easily distinguished from insects by this fact, since insects have six legs. However, arachnids also have two further pairs of appendages that have become adapted for feeding, defense, and sensory perception. The first pair, the chelicerae, serve in feeding and defense.