Cicindela circumpicta LaFerté-Sénectère
Cicindela circumpicta pembina W.N. Johnson Distribution in North Dakota
Identification: Body size medium, about 12 mm to 14 mm in length. Dorsal surfaces of head and prothorax either metallic bright green, dark green, copper brown, or completely dark brown to black. Dorsal surface of elytra somewhat shiny and commonly dark metallic brown or uncommonly dark metallic green. Humeral and apical lunules and marginal line all thickly connected along lateral elytral margin. Middle band present but protruding only a short distance medially. Labrum tridentate and clypeus glabrous. Frons and genae glabrous. Supraorbital region with two setae. Antennal scape with one sensory seta only.
Remarks: North Dakota specimens of Cicindela circumpicta belong to the subspecies C. circumpicta pembina W.N. Johnson. This subspecies was recently described from northeastern North Dakota (Johnson 1994) and is a distinct population separate from the more southern subspecies C. circumpicta johnsonii. The nearest populations of C. circumpicta johnsonii are probably in east-central Nebraska. C. circumpicta pembina differs from C. circumpicta johnsonii in being slightly smaller and darker. C. circumpicta pembina is similar in appearance to C. scutellaris lecontei. C. scutellaris lecontei has serrulate elytra and a cluster of supraorbital setae, while C. circumpicta pembina has non-serrulate elytra and only two supraorbital setae.
Habitat: Saline flats and open areas.
North Dakota Distribution: In North Dakota, C. circumpicta pembina has only been collected from Pembina, Walsh, and Grand Forks Counties in northeastern, but possibly occurs northwestern Minnesota, and in southeastern Manitoba. This subspecies appears to be restricted to the Glacial Lake Agassiz lake basin around the Red River of the North.
Season: Adults are active during the summer. Museum specimens have collection dates ranging from mid-July through all of August.