Orange Sulphur (Colias-eurytheme):

Wings of Change butterfly of the month January 2023

Learn

Have you ever encountered a gorgeous, orange-colored butterfly with white spots on its wings? If you’ve ever seen this beautiful creature up close, then you’ve most likely seen the Orange Sulphur (Colias-eurytheme). This species of butterfly is remembered by its vibrant orange hue and its white spots, making it visible even from a distance. Let’s explore the amazing lifecycle of the Orange Sulphur. 

At this point, their appearance will change drastically. At the beginning of the pupa stage, they are a yellow-green color, which will eventually turn dark as they enter the adult stage of their lifecycle. During this stage, they will remain relatively still and suspend themselves in the air. They will stay in the pupa form anywhere from 10-30 days and eventually emerge as a fully developed butterfly.

Grow

The Orange Sulphur butterfly begins its life in its egg form, which is typically laid on the leaves of plants like clover, alfalfa, and alsike clover. The eggs are laid in clusters, with each egg measuring about 1.5 mm in length. Once the eggs are laid, they typically hatch within 3-10 days, depending on the weather conditions. The larvae hatched from the eggs are light green in color and have thick bodies with short legs. The larvae initially feed on foliage and can grow up to 7–10 mm long. Once their larvae form is complete, the larvae will enter their pupa stage. 

The Orange Sulphur tends to have multiple broods per year, typically two or three. This varies mainly dependent on the geographical area, as well as the temperatures for that region. Depending on the area, the Orange Sulphur’s population may be high, however, with certain agricultural practices, their numbers may be decreasing.

The Orange Sulphur can be found all across North America, most commonly in California and New England. They enjoy warm climates in the summer and cooler temperatures in the winter. Originally, their main habitats were found in open fields, as well as valleys, but they have become more urbanized in recent years due to the development of agricultural land. Their host plants include Deerweed, Lupines, and clovers. It can become a pest in alfalfa fields. 

Change

Ultimately, the Orange Sulphur is an incredible species that thrives in North America and is a popular sight during summer months. Though the population of Orange Sulphurs may be decreasing due to certain agricultural practices, they are still relatively plentiful. They travel in swarms, so it is quite easy to spot a congregation of them when they are in their prime. So keep an eye out, as you might end up being lucky enough to take a peek at an Orange Sulphur!

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