Passalidae

（重定向自Bess beetle）

Passalidae is a family of beetles known variously as "bessbugs", "bess beetles", "betsy beetles" or "horned passalus beetles". Nearly all of the 500-odd species are tropical; species found in North America are notable for their size, ranging from 20–43 mm, for having a single "horn" on the head, and for a form of social behavior unusual among beetles.

单词	Bess beetle
释义	Bess beetle 英语百科 Passalidae （重定向自Bess beetle） Passalidae is a family of beetles known variously as "bessbugs", "bess beetles", "betsy beetles" or "horned passalus beetles". Nearly all of the 500-odd species are tropical; species found in North America are notable for their size, ranging from 20–43 mm, for having a single "horn" on the head, and for a form of social behavior unusual among beetles.
随便看	cephalic disk cephalic dorsal body cephalic ectoderm Cephalic emphysema cephalic enteron cephalic expansion cephalic fever cephalic filament cephalic fin cephalic fins Cephalic flexure cephalic fold cephalic foramen cephalic ganglia cephalic ganglion cephalic ganglionated plexus cephalic gland cephalic glands cephalic groove cephalic heart cephalic hood cephalic hypochorda Cephalic index cephalic indexes cephalic induction