Opostegoides scioterma is a moth of the Opostegidae family. It is probably widespread across most of the northern United States and southern Canada from western Oregon, Washington and British Columbia east to Ontario and Maine. The length of the forewings is 3.1-4.4 mm. Adults have been collected from mid-June to early August. After dropping to the ground, the larva eventually constructs a flattened, oval, densely woven, cream to brown cocoon in the upper soil layer. The pupal stage may last about 2–3 weeks.