Transarctic-distribution
Guides
Rhyacia quadrangula
Quadrangle Dart
Rhyacia quadrangula, commonly known as the Quadrangle Dart, is a noctuid moth with a transcontinental distribution spanning the Arctic and boreal regions of Eurasia and North America. The species exhibits a disjunct range, occurring in Iceland, Greenland, central Asia including the Pamir Mountains, and across northern Canada and the northwestern United States. Adults are active during late summer, with flight records from July through September.