Pharnacia ponderosa, mouldy eggs
This mould appeared over the weekend. The eggs of phasmids are pretty tough, and generally survive attacks by mould. In this case the mould is removed by gently rubbing the eggs. Mould can also be controlled by allowing the eggs to dry out for a short period fairly regularly. It is possible to sterilise the surface of various butterfly eggs using dilute sterilisiation solutions, so I may give it a try as a mini-experiment.