The green darner or common green darner (Anax junius), after its resemblance to a darning-needle, is a species of dragonfly in the family Aeshnidae. One of the most common and abundant species throughout North America, it also ranges south to Panama. It is well known for its great migration distance from the northern United States south into Texas and Mexico. It also occurs in the Caribbean, Tahiti, and Asia from Japan to mainland China. It is the official insect for the state of Washington in the United States.
|Adult female, Blackwell Forest Preserve, Illinois|
Females oviposit in aquatic vegetation, eggs laid beneath the water surface. Nymphs (naiads) are aquatic carnivores, feeding on insects, tadpoles and small fish. Adult darners catch insects on the wing, including ant royalty, moths, mosquitoes and flies.
- Cirrus Digital Anax junius
- Dunkle, S.W. (2000). Dragonflies through Binoculars: A Field Guide to Dragonflies of North America. New York:Oxford University Press, p.33.
- Eaton, Eric R.; Kaufman, Kenn (2006). Kaufman Field Guide to Insects of North America. Houghton Mifflin Company. p. 42. ISBN 978-0-618-15310-7.
- Evans, Arthur V. (2007). Field Guide to Insects and Spiders of North America. Sterling Publishing Co., Inc. p. 62. ISBN 978-1-4027-4153-1.
- Hallworth, Michael T.; Marra, Peter P.; McFarland, Kent P.; Zahendra, Sara; Studds, Colin E. (2018). "Tracking dragons: stable isotopes reveal the annual cycle of a long-distance migratory insect". Biology Letters. 14 (12): 20180741. doi:10.1098/rsbl.2018.0741.
- University of Michigan Zoology Anax junius
- Hahn, Jeffrey (2009). Insects of the North Woods. Kollath+Stensaas Publishing. p. 16. ISBN 978-0-9792006-4-9.