Ungeflügelte Weibchen (Virgines) der Schwarzen Bohnenlaus gebären parthenogenetisch Jungtiere. Einzelne Phasen der Geburt: Austreten des Embryos, Aufplatzen der Embryonalhülle, Abstreifen der Hülle und Freiwerden der Gliedmaßen.

Two examples document the birth process. With several quick thrusts the virgo forces the young louse out of oviduct with its abdomen forward. With the head remaining in the oviduct of the virgo, the young louse bursts open the embryonal sheath along the preformed dorsal suture. The embryonal sheath is stripped off by continous displacement of the haemolymph. After the legs of the young louse have been freed from the sheath and have a hold on the back of a conspecific, the virgo disconnects itself from the newly born larva by a twishing movement of the abdominal tip.