Atelocerata

• Overview
• Taxonomy
• Classes
• Sources

Overview

Taxonomy

The Infraphylum Atelocerata is further organized into finer groupings including:

• Superclass (2): Myriapoda · Panhexapoda
• Series (10): Aculeata · Bombyciformes · Cossiformes · Gracillariiformes · Hesperiiformes · Limacodiformes · Papilioniformes · Parasitica · Saturniiformes · Tineiformes
• Class (8): Bivalvia · Chilopoda · Diplopoda · Entognatha · Insecta · Oligohymenophorea · Pauropoda · Symphyla

Classes

Bivalvia

Bivalves are marine and freshwater belonging to the class Bivalvia. Other names for the class include Bivalva, Pelecypoda, and Lamellibranchia. The class contains 30,000 species, including scallops, clams, oysters and mussels. [more]

Chilopoda

Centipedes (from prefix centi-, "hundred", and Latin pes,pedis, "foot") are arthropods belonging to the class Chilopoda and the Subphylum Myriapoda. They are elongated metameric animals with one pair of legs per body segment. A key trait uniting this group is a pair of venom claws or forcipules formed from a modified first appendage. This also means that centipedes are an exclusively predatory taxon, which is uncommon.^{[citation needed]} [more]

Diplopoda

Millipedes (Class Diplopoda, previously also known as Chilognatha) are that have two pairs of legs per segment (except for the first segment behind the head which does not have any appendages at all, and the next few which only have one pair of legs). Each segment that has two pairs of legs is a result of two single segments fused together as one. Most millipedes have very elongated cylindrical bodies, although some are flattened dorso-ventrally, while pill millipedes are shorter and can roll into a ball, like a pillbug. [more]

Entognatha

[more]

Insecta

Insects ( Insecta) are arthropods, having a hard exoskeleton, a three-part body (head, thorax, and abdomen), three pairs of jointed legs, compound eyes, and two antennae. They are the most diverse group of animals on the planet and include approximately 30 Notoptera, 35 Zoraptera, 150 snakefly, 200 silverfish, 300 alderfly, 300 webspinner, 350 jumping bristletail, 550 scorpionfly, 600 Strepsiptera, 1,200 caddisfly, 1,700 stonefly, 1,800 earwig, 2,000 flea, 2,200 mantis, 2,500 mayfly, 3,000 louse, 3,000 walking stick, 4,000 cockroach, 4,000 lacewing, 4,000 termite, 5,000 dragonfly, 5,000 thrips, 5,500 booklouse, 20,000 cricket, grasshopper, and locust, 82,000 true bug, 110,000 ant, bee, sawfly, and wasp, 120,000 true fly, 170,000 butterfly and moth, and 360,000 beetle species described to date. The number of extant species is estimated at between six and ten million, with over a million species already described. Insects represent more than half of all known living organisms and potentially represent over 90% of the differing life forms on Earth. Insects may be found in nearly all environments, although only a small number of species occur in the oceans, a habitat dominated by another arthropod group, the crustaceans. [more]

Oligohymenophorea

The Oligohymenophorea are a large class of protozoa. There is typically a ventral groove containing the mouth and distinct oral cilia, separate from those of the body. These include a paroral membrane to the right of the mouth and membranelles, usually three in number, to its left. The cytopharynx is inconspicuous and never forms the complex cyrtos found in similar classes. Body cilia generally arise from monokinetids, with dikinetids occurring in limited distribution over part of the body. [more]

Pauropoda

Pauropods are small, pale, -like arthropods. They form the order Pauropodina, belonging to the monotypic class Pauropoda. About 500 species in four families are found worldwide, living in soil and leaf mold. They look rather like centipedes, but are probably the sister group to millipedes. [more]

Symphyla

Symphylans, also known as garden centipedes or glasshouse symphylans, are -dwelling arthropods of the class Symphyla in the subphylum Myriapoda. Symphylans resemble centipedes, but are smaller and translucent. They can move rapidly through the pores between soil particles, and are typically found from the surface down to a depth of about 50 cm. They consume decaying vegetation, but can do considerable harm in an agricultural setting by consuming seeds, roots, and root hairs in cultivated soil. [more]

At least 90 species and subspecies belong to the Class Symphyla.

More info about the Class Symphyla may be found here.

Sources

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