Rearing Papilio rutulus
Here is a photo of rutulus ova on a small potted willow used in my hot box method. Normally the female tiger swallowtails lay eggs singly, high up in the trees. You would rarely see rutulus eggs grouped like this in the wild. These are some of the largest North American butterfly eggs you will ever see. They start out pearly light green in color and turn brown just before hatching. These are ready to pop.