Wisconsin Odonata Survey title graphic Wisconsin Odonata Survey graphic Wisconsin Odonata Survey graphic Wisconsin Odonata Survey graphic Wisconsin Odonata Survey graphic

Somatochlora franklini
Delicate Emerald

(Selys, 1878)
Corduliidae, Emerald Family
photo of Male delicate emerald
Male delicate emerald — Dan Jackson
The medium-sized, dark brown striped emeralds have some pale markings on the thorax and abdomen, black legs, clear wings and brilliant green eyes. The thorax has a metallic bronze-green sheen and the abdomen is dark metallic black-green. Most species are uncommonly seen, but this may be largely due to their secretive nature. When flying, most species look alike which is why in-hand identifications of their anatomical features are often needed.
Status-Global/State:
Global: G5 Wisconsin: S3
Distinguishing Characteristics:
This dark emerald, about 1.7 inches long, has a very slender abdomen with almost no markings at all. Because of the very long, slender abdomen and black markings at the base of the hind wings, this species is easily separated from other Somatochlora species.
Description of Habitat/Range:
Common throughout Canada and northern United States, it is usually found at spring-fed sphagnum bogs or fens, generally not next to open waters. It is occasionally found at appropriate habitats in northern Wisconsin.
Flight Season:
Late May to early August in Wisconsin.
(Click on photos to enlarge)
photo of Male delicate emerald
Male delicate emerald — Dan Jackson
photo of Male delicate emerald
Male delicate emerald — Dan Jackson
photo of Immature male delicate emerald
Immature male delicate emerald — Dan Jackson
photo of Side (top image) and top view of male delicate emerald cerci
Side (top image) and top view of male delicate emerald cerci — Dan Jackson
photo of Female delicate emerald
Female delicate emerald — Dan Jackson
photo of Immature female delicate emerald
Immature female delicate emerald — Dan Jackson
photo of Close-up of female delicate emerald thorax
Close-up of female delicate emerald thorax — Dan Jackson
photo of Side view of female delicate emerald abdomen tip
Side view of female delicate emerald abdomen tip — Dan Jackson
This site is produced in conjunction with the Wisconsin Aquatic and Terrestrial Resources Inventory and sponsored by the Wisconsin Department of Natural Resources. The information presented on this site is subject to the Wisconsin Department of Natural Resources' Legal Notices, Disclaimers, and Terms of Use.