The caterpillar of a Yellow Swallowtail butterfly (Papilio machaon) a day before starting the coccoon. Two or three lays of eggs hatched on my rue plants, which are apparently one of their favorite meals.
Yellow Swallowtail Caterpillar
![Yellow Swallowtail Caterpillar](/content/images/size/w300/2022/12/58-yellow-swallowtail-caterpillar-Insta1080wm.jpg 300w,
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The caterpillar of a Yellow Swallowtail butterfly (Papilio machaon) a day before starting the coccoon. Two or three lays of eggs hatched on my rue plants, which are apparently one of their favorite meals.