Atalopedes campestris (called sachem in the United States and Canada) is a small grass skipper butterfly.

[4] The uppersides of the male forewing are orange bordered with brown and have a large four sided black stigma.

[4] Females can always be identified by the square white transparent spot at the end of the forewing cell.

[3] Underside of wings on both sexes are variable but the female hindwing is brown with light colored four-sided spots.

[5] This skipper is common in the southern United States ranging south through Mexico and Central America to Colombia, Venezuela, Ecuador, and Brazil.

[2] Atalopedes campestris can be found in open, disturbed areas such as roadsides, lawns, pastures, parks, oil fields, and landfills.

[3][4] It had been observed that the sachem expanded its range northward rapidly during the beginning of the 21st century.

A study by Crozier shows that this expansion is due to the winter warming trend of climate change rather than evolution of cold tolerance for this species.

[9] The sachem butterfly undergoes fours stages of complete metamorphosis: Eggs are greenish-white and are laid singly on or near the host plant leaves.

[10] The larvae construct nests made of a host plant leaf (or leaves) and silk that they excrete.

In the southern part of their range, flights occur four to five times, March through December.