There are no industrious preparations as with the Balinidae, the Larinidae, and the Rhynchitides.

Not being equipped with a long oviscapt, the mother sows her eggs in the open, with no protection against the heat of the sun and the variations of temperature.

Nothing could be simpler, and nothing more perilous to the eggs, in the absence of special characteristics which would enable them to resist the alternate trials of heat and cold, moisture and drought.
In the caressing sunlight of ten o'clock in the morning the mother runs up and down the chosen pod, first on one side, then on the other, with a jerky, capricious, unmethodical gait.

She repeatedly extrudes a short oviduct, which oscillates right and left as though to graze the skin of the pod.

An egg follows, which is abandoned as soon as laid.
A hasty touch of the oviduct, first here, then there, on the green skin of the pea-pod, and that is all.