Wisconsin Odonata Survey

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Somatochlora incurvata  Walker, 1918
Incurvate Emerald


Corduliidae, Emerald Family
"Most Wanted" Species

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: G4     Wisconsin: S2S3     Endangered

Distinguishing Characteristics:

The incurvate emerald is similar to the forcipate emerald and Kennedy's emerald but larger and more elongated. The body varies from 1.9 to 2.3 inches in the length. The thorax has blurred pale markings. The abdomen has dull yellow spots on most segments. The juvenile females may have orange wingtips.

Description of Habitat/Range:

Ranging throughout northeastern United States and southeastern Canada, this species prefer bog pools and open wet sedge meadows. Little is known about its life history. In Wisconsin, it is known from scattered open sedge meadow bogs and fens throughout the state.

Flight Season:

In Wisconsin, adults have been documented from mid-June to mid-September. The flight season, throughout its range, is from mid-June to early October.


Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
2%
(1)
25%
(15)
31%
(18)
41%
(24)
2%
(1)
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 incurvate emerald
Male incurvate emerald. © Dan Jackson

Male incurvate emerald
Photo of Male incurvate emerald
Male incurvate emerald. © Dan Jackson

Male incurvate emerald
Photo of Female incurvate emerald
Female incurvate emerald. © Dan Jackson

Female incurvate emerald
Photo of Female incurvate emerald
Female incurvate emerald. © Andy Paulios

Female incurvate emerald
Photo of Female incurvate emerald
Female incurvate emerald. © Andy Paulios

Female incurvate emerald
Photo of Incurvate emerald pair
Incurvate emerald pair. © Dan Jackson

Incurvate emerald pair



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