Wisconsin Odonata Survey


Somatochlora elongata  (Scudder, 1866)
Ski-tipped Emerald

Corduliidae, Emerald Family

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.


Global: G5     Wisconsin: S2S3    

Distinguishing Characteristics:

This dark dragonfly has prominent yellow stripes on the sides of the thorax and a slender abdomen. The body length varies from 2.0 to 2.4 inches.

Description of Habitat/Range:

It is usually found at slow to moderate streams, beaver ponds, and lake inlets/outlets. It is found throughout northeastern United States, including Appalachian Mountains. In Wisconsin, it is found infrequently in northern counties.

Flight Season:

In Wisconsin, the typical flight season is from early June to late August.

Shading illustrates monthly percentages of the total flight season records for the species. Each flight season record is a unique date/location/observer combination where one or more adult or an exuvia was recorded (excludes nymphs). The actual number of flight season records for each month is shown in parentheses.

Flight seasons begin earlier in the southern part of the state, often by a week or more. Also, flight charts may not be accurate for rare species because of few data available.
View user-submitted photos

(Click on photos to enlarge)
Photo of Male ski-tipped emerald
Male ski-tipped emerald. © Dan Jackson

Photo of Male ski-tipped emerald
Male ski-tipped emerald. © Dan Jackson

Photo of Female ski-tipped emerald
Female ski-tipped emerald. © Ryan Brady

Photo of Female ski-tipped emerald
Female ski-tipped emerald. © Kurt Mead

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