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

[Latin, back.]

ter′gal (-gəl) adj.


n, pl -ga (-ɡə)
(Zoology) a cuticular plate covering the dorsal surface of a body segment of an arthropod. Compare sternum3
[C19: from Latin: the back]
ˈtergal adj


(ˈtɜr gəm)

n., pl. -ga (-gə).
the dorsal surface of a body segment of an arthropod.
[1820–30; < Latin: the back]
ter′gal, adj.
References in periodicals archive ?
separate), the number of tubercles on the penultimate abdominal tergum (in Vietnura 3 tubercles: 2 (De + DL) and (Di + Di), in Intricatonura gen.
These plates include a median dorsal carina, and on each side one to two scuta and a tergum.
Chan et al (2007a, b) have demonstrated the utility of this multivariate technique to discriminate the scutum and tergum parameters among barnacle species.
75 times as long as wide, basal margin widest; sclerites of tergum 6 small, about 0.
dirae ferro et compagibus artis claudentur belli portae: Furor impius intus, saeva sedens super arma, et centum victus aenis post tergum nodis, fremet horridus ore cruento.
Tergum with carinal margin protuberant in upper half to third, spurlength a tenth shorter than width, distance from basiscutal angle less than own width (Gordon, 1970, Biccard, 2012), the classification of this species as follows:
5 mm long; females with short ovipositor; metasomal tergum weakly sclerotized; antenna short with 10 to 28 segments; ovipositor sheath or hypopygium in females often modified; a single, large median cell in the fore wing in most species; smooth scutellar sulcus present; cross vein cu-a absent in the hind wing and occipital carina present (at least laterally) (Stary 1970; Achterberg 1997).
Yna ar ben y gramen, mae yna ddwy blat fechan arall, a'r ddwy hefo'i gilydd yn gwneud caead ar ben y gragen long - y tergum a'r scutum ydi'r enwau gwyddonol ar y rhain.
Apical margin of tergum 1 distinctly raised; apical margin of tertige 2 and 3 forming a conspicuously raised, thin lamella, which is separated from the segment by a deep groove.
Discussion: Species in this genus are distinguished based on characteristics of pronotum punctation and maculation, connexiva coloration, and characters related to male genitalia and medial lobes of the 8th abdominal tergum.