tergum

[ tur-guh m ]

/ ˈtɜr gəm /

the dorsal surface of a body segment of an arthropod.

Origin of tergum

1820–30; < Latin: the back

terf, terfel, tergal, tergite, tergiversate, tergum, terhune, teriyaki, term, term day, term infant

Terga, large, nearly equalling the scuta in area, flat and sub-triangular; the scutal margin is not quite straight.

A Monograph on the Sub-class Cirripedia (Volume 1 of 2) |Charles Darwin
The umbo projects a little over the scutal margin of the terga.

A Monograph on the Sub-class Cirripedia (Volume 1 of 2) |Charles Darwin
All the valves, even in the same species, are subject to considerable variation in shape, more especially the terga.

A Monograph on the Sub-class Cirripedia (Volume 1 of 2) |Charles Darwin
Basal margin nearly on a level with that of the scuta and with the basal points of the terga.

A Monograph on the Sub-class Cirripedia (Volume 1 of 2) |Charles Darwin

Terga extremely narrow, linear, consisting in chief part of the spur, which is fully four fifths of the entire length.

A Monograph on the Sub-class Cirripedia (Volume 2 of 2) |Charles Darwin

tergum

/ (ˈtɜːɡəm) /

a cuticular plate covering the dorsal surface of a body segment of an arthropod Compare sternum (def. 3)

tergal, adjective

C19: from Latin: the back