All Topics  
Petiole (insect)

 
Petiole (insect)

 
   Email Print
   Bookmark   Link
 

 

Petiole (insect)
 
 
  Topics Petiole (insect) Topic Home

In entomology
Entomology

Entomology is the science study of insects. At some 1.3 million described species, insects account for more than two-thirds of all known organisms,date back some 400 million years, and have many kinds of interactions with humans and other forms of life on earth....
, the term petiole is most commonly used to refer to the constricted first (and sometimes second) metasoma
Metasoma

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....
l segment of members of the Hymenoptera
Hymenoptera

Hymenoptera is one of the larger order s of insects, comprising the sawfly, wasps, bees, and ants. The name refers to the membranous wings of the insects, and is derived from the Ancient Greek language wikt:???? : membrane and wikt:pte??? : wing....
n suborder Apocrita
Apocrita

Apocrita is a suborder of insects in the order Hymenoptera.The Apocrita includes wasps, bees and ants, and consists of many families. It includes the most advanced Hymenoptera and is distinguished from the Symphyta by the narrow "waist" formed between the first two segments of the actual abdomen; the first abdominal segment is fused to the...
; it may be used to refer to other insects with similar body shapes, where the metasomal base is constricted. Occasionally, it is alternatively called a pedicel, but in entomology, that term is more correctly reserved for the second segment of the antenna
Antenna (biology)

Antennae are paired appendages connected to the front-most morphogenesis of arthropods. In crustaceans, they are biramous and present on the first two segments of the head, with the smaller pair known as antennules....
.

The portion of the metasoma posterior to the petiole (and postpetiole in Myrmecinae
Myrmecinae

The Myrmecinae is a subfamily in the Formicidae.Its members possess both a Petiole and postpetiole and do not enclose their young in Cocoon s, suggesting of evolutionary advancement in comparison with, for example, the Formicinae....
) is known as the gaster
Gaster

The gaster is the bulbous posterior portion of the metasoma found in Apocrita Hymenoptera . This begins with abdomen segment III on most ants, but some make a postpetiole out of segment III, so the gaster begins with abdominal segment IV....
.








Discussion
Ask a question about 'Petiole (insect)'
Start a new discussion about 'Petiole (insect)'
Answer questions from other users
Full Discussion Forum



Encyclopedia


Ant Closeup
In entomology
Entomology

Entomology is the science study of insects. At some 1.3 million described species, insects account for more than two-thirds of all known organisms,date back some 400 million years, and have many kinds of interactions with humans and other forms of life on earth....
, the term petiole is most commonly used to refer to the constricted first (and sometimes second) metasoma
Metasoma

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....
l segment of members of the Hymenoptera
Hymenoptera

Hymenoptera is one of the larger order s of insects, comprising the sawfly, wasps, bees, and ants. The name refers to the membranous wings of the insects, and is derived from the Ancient Greek language wikt:???? : membrane and wikt:pte??? : wing....
n suborder Apocrita
Apocrita

Apocrita is a suborder of insects in the order Hymenoptera.The Apocrita includes wasps, bees and ants, and consists of many families. It includes the most advanced Hymenoptera and is distinguished from the Symphyta by the narrow "waist" formed between the first two segments of the actual abdomen; the first abdominal segment is fused to the...
; it may be used to refer to other insects with similar body shapes, where the metasomal base is constricted. Occasionally, it is alternatively called a pedicel, but in entomology, that term is more correctly reserved for the second segment of the antenna
Antenna (biology)

Antennae are paired appendages connected to the front-most morphogenesis of arthropods. In crustaceans, they are biramous and present on the first two segments of the head, with the smaller pair known as antennules....
.

The portion of the metasoma posterior to the petiole (and postpetiole in Myrmecinae
Myrmecinae

The Myrmecinae is a subfamily in the Formicidae.Its members possess both a Petiole and postpetiole and do not enclose their young in Cocoon s, suggesting of evolutionary advancement in comparison with, for example, the Formicinae....
) is known as the gaster
Gaster

The gaster is the bulbous posterior portion of the metasoma found in Apocrita Hymenoptera . This begins with abdomen segment III on most ants, but some make a postpetiole out of segment III, so the gaster begins with abdominal segment IV....
.

Other uses

  • The term may also be used in the context of wing veins
    Insect wing

    Insect wings are outgrowths of the insect exoskeleton that enable insects to Insect flight. They are found on the second and third thorax segments , and the two pairs are often referred to as the forewings and hindwings, respectively, though a few insects lack hindwings, even rudiments....
    , where a wing cell that is ordinarily four-sided is reduced to a triangle with a stalk (the cell thus being petiolate).
  • It is also used to refer to the stalk at the base of paper wasp
    Paper wasp

    Paper wasps are 3/4 inch to 1 inch -long wasps that gather fibers from dead wood and plant stems, which they mix with saliva, and use to construct water-resistant nests made of gray or brown papery material....
     nests.