Assessment of hatching success, mortality rate and diapause incidence. Eggs (A) are immersed in tap water twice. After this hatching test, eggs can either hatch (orange arrows – B), resulting in a larva (C and D) out of the shell, or remain unhatched (red arrows – E), meaning the egg has not opened. Afterwards, unhatched eggs are bleached (blue arrows). In this case, unhatched eggs can either be unfertilised (F), partially embryonated (G) or contain a fully developed embryo (H). Full embryogenesis is achieved when complete segmentation (s), pigmented ocelli (o.p) and egg burster (e.b) are observed without deformity.