labium

Labium obcordatum basi corneum angustius apice membranaceum medio emarginatum ciliatum lobo utrinque rotundato.

In many Hymenoptera it emerges from the Labium, and is fitted to collect liquids and pass them downwards.

In a considerable proportion of insects it seems connate with the Labium, and forming its inner surface?

The jointed sheath of the Promuscis, representing the Labium in a perfect mouth.

The labium (fig. 12) is furnished with two palpi, which are 3-jointed.