What are ENTOGNATHANI?
ENTOGNATHANI, members of the ENTOGNATHA class, are a group of hexapods (six -legged) animals from arthropods closely related to insects, but generally more primitive and basal (divided earlier) than insects. ENTOGNATHANS include three orders: Collembola (Springtails, with more than 6000 species), a diplior (800 species) and a protuction (sometimes called "Coneheads", with 731 species). It is assumed that ENTOGNATHANI has developed their six -legged form of locomine independently of insects and each other. Although ENTOGNATHANI was placed in the same class, they are probably not monophyletic (dating from an ordinary ancestor). Further updates can completely cancel the class. ENTOGNATHANS, whose name means "inner jaw", have their mouths inner to the head capsules and peek only tips. This is unlike all insects that have outer mouth. ENTOGNATHANI were considered insects until they found a closer analysis that each of them had the basic differences from this group.
As mentioned, ENTOGNATHANI is small. Immediate diploy, which resemble transparent Earwigs, usually have a length of 2-5 mm, although some members of the predatory family japhyx can reach a size of 5 cm (2 inches). Diplors live in leaf litters in mild forests, and with their ceremonial (tail attachments) they capture small pieces of living and dead mass, including mites, other diplor and fungi. The species has a short ceremony.
Propurans, sometimes called Conheads because of their appearance, are another group of small (> 2 mm) entognathane found in Soil, usually up to 10 cm (4 inches) from the surface. Proturans are probably the most basic of all hexapods and may look like some of the first arthropods who live on the ground and the first to turn from sea crustaceans, although it is speculative. It is one of the few hexapods that lack ceres, and are so small and easy to see that they were discovered only in 1907.
The latest ENTOGNATHANS are Springtails,which are the most diverse, numerous and most famous ENTOGNATHANS. They are considered to be among the most abundant macroscopic animals on the ground and can be found almost anywhere, and on all seven continents there are habitats related to soil or soil. Unlike the other enthognathanes, the springs have eyes, although their vision is very bad. Springtails are more abundant in cold climates, which is a diametrically phenomenon against most other arthropods. They get their name from the tails they use to release from the ground and from predators. Springtails and is less than 6 mm long, although some types reach 10 mm. Many species are difficult to see with the naked eye and is less than mm in length.
More studies are needed to determine the exact relationship of ENTOGNATHANS to each other and other insects. This information can help us understand how hexapods has evolved from other groups and why ENTOGNATHANS is not nearly as diverse as insects.