Tergum

The tergum of this wasp is labeled 19.

A tergum (plural terga) is the dorsal portion of an arthropod segment other than the head. A given tergum may be divided into hardened plates or sclerites commonly referred to as tergites.

References

• McCafferty, W.Patrick (1983). Aquatic entomology: the fishermen's and ecologists' illustrated guide to insects and their relatives. Jones & Bartlett Publishers, ISBN 0867200170, ISBN 978-0-86720-017-1. Accessed here through Google Books on 08 Jan 2010.