The Collaborative International Dictionary
Postscutellum
Postscutellum \Post`scu*tel"lum\, n. [NL. See Post-, and Scutellum.] (Zo["o]l.) The hindermost dorsal piece of a thoracic somite of an insect; the plate behind the scutellum.
Wiktionary
postscutellum
n. (context zoology English) The hindmost dorsal piece of a thoracic somite of an insect; the plate behind the scutellum.