Egg disinfection and hatching. (A) Components of an egg bleaching station. (B) Rinsing eggs from the oviposition cup onto the filter paper using the vacuum filtration system. (C) Floating eggs in a bleach solution for disinfection. (D) Clean eggs on filter paper placed in a holding container for storage before hatching. (E) Setup for hatching on sponge cloth. A filter paper containing eggs is placed on top of a raised bed of sponge cloth, allowing the eggs to stay moist but contained and the larvae to wriggle off. (F) Example of an infertile egg (egg 1) and fertile eggs that are either unhatched (egg 2), hatched (egg 3 and 4), or in the process of hatching (larva eclosing, egg 4). The open operculum is observed in eggs 3 and 4.