A monarch kind of day

Two monarch butterflies emerged today. One in the garden, and the other in our butterfly house.

Both of them hung out on my zinnia plants, which is a new feature in the garden, a DYI fountain, that has plants surrounding it in a pot.

The monarch butterfly’s scientific name is Danaus Plexippus, which means “sleepy transformation” in Greek. The male has two black spots in the center of its lower wings and are larger in size than the female. According to the National Wildlife Federation, the spots are scent glands, which help the males attract females.

The monarch caterpillars feed solely on milkweed leaves, which produces glycoside toxins, according to the National Wildlife Federation, which deters other animals from eating the caterpillars. The toxins are stored making them taste bad and remains after they emerge into a butterfly, continuing to protect them.

The monarch butterfly will emerge 10 to 12 days after making its chrysalsis. The transformation is incredible to witness as the green chrysalis eventually becomes translucent revealing the beautiful black and orange body within.

The butterfly emerges headfirst with small and shriveled wings. As it pumps body fluid through its wings they grow in size. The butterfly will remain in the same spot for up to two hours drying its wings, hardening them getting ready for flight. According to Arizona State University School of Life Sciences, during the two hours it is also waiting for air to replace some of its fluids.

Hanging on

It’s pretty cool to watch caterpillars eat. There are still some great southern white caterpillars in the garden.

Population explosion

The polydamas swallowtail caterpillar population has exploded in the garden. I watched the polydamas swallowtail lay eggs on my birthwort, which is now crawling with tons of caterpillars.

The polydamas swallowtail caterpillars feed in groups when they are small, devouring the youngest leaves, as well as flowers before moving onto the older portions of the plant.

The caterpillar will go through four instars, 19 to 24 days, before it’s ready to form its chrysalis. The colors of the caterpillars are a bit different during the first instar, with tan and small tubercles. Once the caterpillar molts into the second instar, they become dark brown with larger tubercles.

They have a black head, prothorax top is orange and short dark stripes. Once the caterpillars enter the third instar, the caterpillar becomes smoother with a glossy appearance.

The caterpillars grow up to 2.1″ in length