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, gen.


, pl.


(dōr'sŭm, -sī, -să), [TA]
1. The back of the body.
2. The upper or posterior surface, or the back, of any part, especially in the quadrupedal position.
Synonym(s): tergum
[L. back]


n. pl. ter·ga (-gə)
The dorsal portion of a body segment of an arthropod.

ter′gal (-gəl) adj.


the plate of thickened, often chitinous material on the dorsal side of an insect segment, forming part of the EXOSKELETON.
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References in periodicals archive ?
armatus was described by Poisson (1948b) from seven localities in the Belgian Congo and distinguished from the nominate form by the presence of denticles on the left medial lobe of the 7th abdominal tergum in males.
Margin of costal region of alae light green, anal region pinkish with dusky areas, usually reaching 6th tergum or 7th tergum.
El analisis de varianza para las coordenadas de forma de cada estructura encontro diferencias significativas en tergum, pronotum y mesosoma (Tabla 1).
Dietrich and Deitz (1993) listed as synapomorphies for Cicadellidae: the mesonotum exposed posteriorly, the labium not reaching the metathoracic coxae, m-cul crossvein present, metatibia with distinct long setae, tarsomere I of hind leg without cucullate setae, stemum IX and subgenital plate not fused, and abdominal tergum with divided acanthae; all of which are homoplastic characters in their analysis.
Abbreviations (x refers to a number): Fx, flagellomere x; xtg, abdominal tergum x; xst, abdominal sternum x.
Setal patterns of abdominal tergum I with numerous large spicisetae in median row; posterior margin bearing only few large spicisetae; hastisetae on median half of the tergite more numerous than spicisetae (Fig.
Tergum I polished and striated longitudinally; remaining tergum smooth and polished, with disperse setae and just along the division of terga (Figure 3a); ovipositor sheaths densely setose; ovipositor 0.
15 mm length or less) on all body; dorsal (outer) margin of hind tibia with abundant suberect setae longer than maximum width of tibia; first gastral tergum smooth and shining; color light brown.
1, 10, 11, 18); male sternum 7 with apical margin straight; styli of tergum 9 simple, moderately stout; sternum 8 with two long subapical macrosetae at each side, with exception of B.
First metasomal tergum with long, minutely-branched setae concentrated near base, remainder of terga with scattered short setae on dorsal surface and long setae laterally, except fifth metasomal tergum completely covered by long setae; sternal setae long and distinctly branched, branches becoming shorter on more distal sterna; edges and gradular bases of sterna with medially-interrupted bands of short setae.
Este genero Kapala se caracteriza morfologicamente por presentar una distintiva carina alrededor del disco liso del propodeum, una sola incision en el primer tergum de la hembra, un corto flagelomero basal en ambos sexos, palpos segmentados y alargados (ausentes en algunos generos de la familia), ramificaciones flagelares largas en el macho y espinas escutelares en forma de lira, apicalmente ensanchadas (Heraty 2002).