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{{Short description|Anthropod body part}} |
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The '''mesosoma''' is the middle part of the body, or [[tagma (biology)|tagma]], of [[arthropod]]s whose body is composed of three parts, the other two being the [[prosoma]] and the [[metasoma]]. It bears the [[arthropod leg|legs]], and, in the case of winged [[insect]]s, the [[insect wing|wings]]. |
The '''mesosoma''' is the middle part of the body, or [[tagma (biology)|tagma]], of [[arthropod]]s whose body is composed of three parts, the other two being the [[prosoma]] and the [[metasoma]]. It bears the [[arthropod leg|legs]], and, in the case of winged [[insect]]s, the [[insect wing|wings]]. |
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==Wasps, bees and ants== |
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In [[Apocrita]] [[Hymenoptera]] ([[wasp]]s, [[bee]]s and [[ant]]s), it consists of the three [[Thorax (insect anatomy)|thoracic]] segments and the first [[abdomen|abdominal]] segment (the [[propodeum]]). For historical reasons, in ants it is commonly referred to by the alternative name '''alitrunk'''.[http://www.ento.csiro.au/science/ants/terms.htm][http://www.bbec.sabah.gov.my/overall/bbec21/Ant.pdf][http://www.desertants.org/indexpages/terminology.html] |
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In [[hymenoptera]]ns of the suborder [[Apocrita]] ([[wasp]]s, [[bee]]s and [[ant]]s), the mesosoma consists of the three [[Thorax (insect anatomy)|thoracic]] segments and the first [[abdomen|abdominal]] segment (the [[propodeum]]). For historical reasons, in ants it is commonly referred to by the alternative name '''alitrunk'''.<ref>{{cite web |url=http://www.ento.csiro.au/science/ants/terms.htm |title=Australian Ants Online - Glossary of terms |access-date=2007-11-04 |url-status=dead |archive-url=https://web.archive.org/web/20071112052819/http://www.ento.csiro.au/science/ants/terms.htm |archive-date=2007-11-12 }}</ref><ref>{{Cite web |url=http://www.bbec.sabah.gov.my/overall/bbec21/Ant.pdf |title=Archived copy |access-date=2007-11-04 |archive-date=2006-03-02 |archive-url=https://web.archive.org/web/20060302051827/http://www.bbec.sabah.gov.my/overall/bbec21/Ant.pdf |url-status=dead }}</ref><ref>{{Cite web|title=Glossary of Descriptive Terminology |url=http://www.desertants.org/indexpages/terminology.html |website=www.desertants.org |access-date=2015-09-10 |url-status=dead |archive-url=https://web.archive.org/web/20130517144322/http://www.desertants.org/indexpages/terminology.html |archive-date=2013-05-17 }}</ref> |
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| ⚫ | In [[scorpion]]s, |
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<gallery> |
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Encyrtidae head thorax abdomen.jpg|The mesosoma (thorax plus propodeum) and [[metasoma]] (remaining segments of the abdomen) of an [[Encyrtidae|encyrtid]] wasp. |
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Scheme ant worker anatomy-en.svg|In the worker ant the mesosoma includes the pronotum, mesonotum, scutellum and the propodeum. The [[Petiole (insect anatomy)|petiole]] and the [[Gaster (insect anatomy)|gaster]] comprise the [[metasoma]]. |
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</gallery> |
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==Arachnids== |
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| ⚫ | In [[scorpion]]s, the mesosoma is composed of six segments and forms the first part of the [[abdomen]], containing all of the major organs. The first segment contains the [[sex organ|sexual organs]] as well as a pair of [[vestigial]] and modified [[appendage]]s forming a structure called the genital operculum. The second segment bears a pair of featherlike [[sensor]]y organs known as the pectines; the final four segments each contain a pair of [[book lung]]s. The mesosoma is [[armour]]ed with [[chitin]]ous plates, on the upper surface by the [[tergite]]s and on the lower surface by the [[sternites]]. |
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In other arachnids such as [[spider]]s, the mesosoma is fused with the [[metasoma]] to form the [[opisthosoma]]. |
In other arachnids such as [[spider]]s, the mesosoma is fused with the [[metasoma]] to form the [[opisthosoma]]. |
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[[Category:Insect anatomy]] |
[[Category:Insect anatomy]] |
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[[ca:Mesosoma (artròpodes)]] |
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{{insect-anatomy-stub}} |
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[[de:Mesosoma]] |
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[[fr:Mésosome (morphologie)]] |
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[[ru:Мезосома (морфология)]] |
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Latest revision as of 06:55, 19 August 2024
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 metasoma. It bears the legs, and, in the case of winged insects, the wings.
Wasps, bees and ants
[edit]In hymenopterans of the suborder Apocrita (wasps, bees and ants), the mesosoma consists of the three thoracic segments and the first abdominal segment (the propodeum). For historical reasons, in ants it is commonly referred to by the alternative name alitrunk.[1][2][3]
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The mesosoma is clearly visible on this ant: it is the middle section, in between the head and the petiole
Arachnids
[edit]
In scorpions, the mesosoma is composed of six segments and forms the first part of the abdomen, containing all of the major organs. The first segment contains the sexual organs as well as a pair of vestigial and modified appendages forming a structure called the genital operculum. The second segment bears a pair of featherlike sensory organs known as the pectines; the final four segments each contain a pair of book lungs. The mesosoma is armoured with chitinous plates, on the upper surface by the tergites and on the lower surface by the sternites.
In other arachnids such as spiders, the mesosoma is fused with the metasoma to form the opisthosoma.
References
[edit]- ^ "Australian Ants Online - Glossary of terms". Archived from the original on 2007-11-12. Retrieved 2007-11-04.
- ^ "Archived copy" (PDF). Archived from the original (PDF) on 2006-03-02. Retrieved 2007-11-04.
{{cite web}}: CS1 maint: archived copy as title (link) - ^ "Glossary of Descriptive Terminology". www.desertants.org. Archived from the original on 2013-05-17. Retrieved 2015-09-10.
- Charles A. Triplehorn, Norman F. Johnson (2005) Borror and DeLong's introduction to the study of insects, 7th edition, Thomson Brooks/Cole.
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