Tergite
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Tergite
Tergites (with lateral paranota) of a polydesmid millipede

A tergum (Latin for "the back"; plural terga, associated adjective tergal) is the dorsal ('upper') portion of an arthropod segment other than the head. The anterior edge is called the base and posterior edge is called the apex or margin. A given tergum may be divided into hardened plates or sclerites commonly referred to as tergites.[1]

In a thoracic segment, for example, the tergum may be divided into an anterior notum and a posterior scutellum. Lateral extensions of a tergite are known as paranota (Greek for "alongside the back") or carinae (Latin for "keel"), exemplified by the flat-backed millipedes of the order Polydesmida.

Kinorhynchs have tergal and sternal plates too, though seemingly not homologous with those of arthropods.[2]

Examples

References

  1. ^ McCafferty, W. Patrick (1983). Aquatic entomology: the fishermen's and ecologists' illustrated guide to insects and their relatives. Jones and Bartlett. p. 20. ISBN 9780867200171. Retrieved – via Google Books.
  2. ^ Sørensen, MV; Dal Zotto, M; Rho, HS; Herranz, M; Sánchez, N; Pardos, F; Yamasaki, H (2015). "Phylogeny of Kinorhyncha based on morphology and two molecular loci". PLOS ONE. 10 (7): e0133440. Bibcode:2015PLoSO..1033440S. doi:10.1371/journal.pone.0133440. PMC 4511640. PMID 26200115.

Further reading

  • Hood, J. Douglas (1958). "The terms tergum and sternum, tergite and sternite". Systematic Zoology. 7 (3): 131-133. doi:10.2307/2411977. JSTOR 2411977.

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Tergite
 



 



 
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