Scorpion anatomy: 1 = Prosoma; 2 = Mesosoma; 3 = Metasoma

The metasoma is clearly visible on this ant: it is the posterior section, including the petiole. In Entomology, the term petiole is most commonly used to refer to the constricted first (and sometimes second Metasomal segment of members of the Hymenopteran

The metasoma is the posterior part of the body, or tagma, of arthropods whose body is composed of three parts, the other two being the prosoma and the mesosoma. In Invertebrate Biology, a tagma (plural tagmata) is a specialized grouping of Arthropodan segments such as the Arthropods are Animals belonging to the Phylum Arthropoda (from Greek ἄρθρον arthron, " Joint " The cephalothorax (call prosoma in some groups is an anatomical term used in Arachnids and Malacostracan Crustaceans for the The mesosoma is the middle part of the body or tagma, of Arthropods whose body is composed of three parts the other two being the Prosoma and the In insects, it contains most of the digestive tract, respiratory system, and circulatory system, and the apical segments are typically modified to form genitalia. In living organisms a respiratory system functions to allow Gas exchange. This is an article about the rock music band "Circulatory System" A sex organ, or primary sexual characteristic, as narrowly defined is any of the anatomical parts of the body which are involved in sexual reproduction and constitute In a few of the most primitive insects (the Archaeognatha), the metasomal segments bear small, articulated appendages called "styli", which are often considered to be vestigial. Archaeognatha is an order of wingless Insects also known as jumping bristletails. Vestigiality describes homologous characters of Organisms which have lost all or most of their original function in a species through There are also pre-apical appendages in most insect orders, called cerci, which may be multi-segmented and almost resembling a posterior pair of antennae; these may be variously modified, or lost entirely. Cerci (singular cercus) are paired Appendages on the rear-most segments of many Arthropods including Insects and Arachnids but not Antennae (singular antenna) are paired Appendages connected to the front-most segments of Arthropods In Crustaceans they are Otherwise, most adult insects lack appendages on the metasoma, though many larval insects (e. g. , caterpillars) have some form of appendages, such as prolegs or, in aquatic insects, gills. Caterpillars are the Larval form of a member of the order Lepidoptera (the Insect order comprising butterflies and Moths Prolegs are the fleshy stubby little structures found on the ventral surface of the Abdomen of most larval forms of Insects of the Order Lepidoptera A gill is an anatomical structure found in many aquatic organisms

In Apocritan Hymenoptera (wasps, bees and ants), the metasoma consists of the second abdominal segment (which typically forms a petiole) and those segments posterior to it, and is often called the gaster rather than referring to it as the "abdomen"; in these insects, the first abdominal segment is called the propodeum and is fused to the thorax. Hymenoptera is one of the larger orders of Insects comprising the sawflies, Wasps Bees and Ants The name refers to A wasp is any Insect of the order Hymenoptera and suborder Apocrita that is neither a Bee nor Ant. Bees are flying Insects closely related to Wasps and Ants Bees are a Monophyletic lineage within the superfamily Apoidea Ants are social Insects of the family Formicidae and along with the related families of Wasps and Bees belong to the order In Vertebrates such as Mammals the abdomen (belly constitutes the part of the body between the Thorax (chest and Pelvis. In Entomology, the term petiole is most commonly used to refer to the constricted first (and sometimes second Metasomal segment of members of the Hymenopteran The gaster is the bulbous posterior portion of the Metasoma found in Apocrita Hymenoptera ( Bees Wasps and Ants. The propodeum is the first abdominal segment in Apocrita Hymenoptera ( Wasps Bees and Ants. The thorax is a division of an Animal 's body that lies between the head and the Abdomen. The metasoma is armoured with chitinous plates, on the upper surface by the tergites and on the lower surface by the sternites. Armour (or armor) is protective covering most commonly manufactured from metals to prevent damage from being inflicted to an individual or a vehicle through use of direct contact Chitin ( C 8 H 13 O 5 N)n (ˈkaɪtən is a long-chain Polymer of a N-acetylglucosamine A tergum (plural terga, associated adjective tergal) is the dorsal portion of an Arthropod segment other than the head The sternum (pl "sterna" is the Ventral portion of a segment of an Arthropod Thorax or Abdomen.

In scorpions, the metasoma is the tail. Scorpions are eight-legged Carnivorous Arthropods They are members of the order Scorpiones within the class Arachnida.

In other arachnids such as spiders, the mesosoma is fused with the metasoma to form the opisthosoma. Spiders are Predatory Invertebrate Animals that have two body segments, eight legs no chewing mouth parts and no wings The mesosoma is the middle part of the body or tagma, of Arthropods whose body is composed of three parts the other two being the Prosoma and the The opisthosoma is the posterior portion of the Arachnids body behind the Prosoma (cephalothorax

This arthropod-related article is a stub. Arthropods are Animals belonging to the Phylum Arthropoda (from Greek ἄρθρον arthron, " Joint " You can help Wikipedia by expanding it.