The egg of the 
Camberwell BeautyNymphalis antiopa (Linnaeus, 1758)Mourning CloakCamberwell Beauty is cylindrical/elliptical with eight protruding longitudinal ribs.
Camberwell BeautyNymphalis antiopa (Linnaeus, 1758)Mourning CloakCamberwell Beauty
Eggs of Camberwell Beauty (Nymphalis antiopa) (Nymphalis antiopa ssp. hyperborea) at American Elm (Ulmus americana)
[Breeding image]
Photograph:
Joseph BelicekJoseph Belicek; Edmonton, Alberta, 
CanadaEdmonton, Alberta, CanadaAlberta, CanadaCanada (7. May 2006)
Breeding: Joseph BelicekJoseph Belicek
Camberwell BeautyNymphalis antiopa (Linnaeus, 1758)Mourning CloakCamberwell Beauty
Eggs of Camberwell Beauty (Nymphalis antiopa)
It is initially green, later purple/brownish and finally black Fonseca, 2025 - Nymphalis antiopa. It has a size of approx. 0.9 * 0.7 mm. Enrique García-BarrosEnrique García-Barros calculates the volume to be 0.241 García-Barros, 1996 - Egg size in butteflies (Lepidoptera: Papilionoidea and Hesperiidae): a summary of data.
In contrast to the Nominiform or (new) nominotypic taxon: Taxon defined by the same name-bearing type as the higher-ranking taxon to which it itself belongs.Type Species Camberwell BeautyNymphalis antiopa (Linnaeus, 1758)Mourning CloakNymphalis antiopa (Linnaeus, 1758), the egg of the subspecies 
Nymphalis antiopa ssp. hyperboreaNymphalis antiopa ssp. hyperborea (Linnaeus, 1758)Nymphalis antiopa ssp. hyperborea (see Subspecies (ssp. hyperborea)) is not green at first, but yellow.
1Enrique García-Barros calculates the volume using the formula: volume = 1 / 6(pi)(max. diameter * max. diameter)(height).