Propygidium: the dorsal segment or tergite in front of the pygidilini, sometimes left exposed in Coleoptera.
A pair of dorso-ventral muscles passing from tergite to sternite in each segment.
The tergite which covers the dorsal part of the first abdominal segment nearest to the thorax is, however, always present.
Thorax much shorter than the head and than the first tergite.
A series of paired longitudinal dorsal muscles passing from tergite to tergite of each successive segment.
