Gonocephalum

Head bent at acute angle to pronotum, each side with a longitudinal, shallow groove between clypeus and gena. Pronotum transverse, widest near middle, anterior part distinctly narrowed, posterior part slightly narrowed; disc flat, without setae, with short and narrow furrows. Mesonotum slightly convex in middle of posterior part, posterior border protuberant. Metathoracic wing sheath incompletely shrouded by elytral sheath. Abdominal tergites I-VII each with a concaveness between its lateral process and lateral border in middle; lateral processes each with 2 equally large and several minute setose tubercles along outer border, with no minute setose tubercle in front of large setose tubercles I, 1 minute setose tubercle between large setose tubercles I and II and behind II, respectively. Width of abdominal segments I-VII subequal. Posterior border of abdominal sternite VIII slightly emarginated in middle, each side of emargination with a long seta. Posterior border of abdominal tergite IX emarginated in middle. Spiracles of abdominal tergites I-VI nearly rounded, slightly convex.

Literature