This embryo is from a fruit fly, hence the genus name Drosophila. They are used a lot in genetic experiments as models as we can track their development with some ease due to their simplicity.
Drosophila embryogenesis has been heavily studied due to the popularity of dropshila melanogaster as a model organism. The early embryo divides thirteen times and the nuclei migrate to the surface surrounding the yolk sac. Cell membranes start to invaginate after the thirteenth division and once the syncytium is separated into individual cells, the embryo undergoes gastrulation.