DESCRIPTION OF THE PREPARATORY STAGES OF PAPILIO PHILENOR, Linn

W. H. Edwards
1881 Canadian Entomologist  
EGG—Spherical ; the surface much covered with a rough crust which rises to a summit, either small and pointed, or rather large and truncated ; the sides of this crust irregularly melon-ribbed ; color of surface russet, of the crust bright ferruginous. Duration of this stage 7 to 9 days.
doi:10.4039/ent139-1 fatcat:zdzm6yscy5e3djneelzoq2ldra