Species ambiguum (Rambur, 1842) [Libellula]
This is the only predominantly eastern species in the region. It has a white face that is bluish above. The thorax is grayish-brown or olivaceous with lateral sutures outlined by thin brown stripes. The wings are clear, with only a small spot of flavescence at their extreme bases. The costa is yellow and the pterostigma is brown with yellow around the outer edges. The legs are pale brown but darker at the joints. The abdomen is brown with diffuse black rings apically around segments 4-9 in young males and females. The abdomen turns red in mature males.
Total length: 31-38 mm; abdomen: 22-25 mm; hindwing: 26-28 mm.
The combination of blue on top of the frons along with the pale legs make this species distinct in the region. Yellow-legged Meadowhawk (S. vicinum ) lacks black rings around the abdomen.
Partially shaded temporary and permanent ponds, pools, marshes, swamps and sloughs.
This species is partial to shaded areas and forest edges. It is typical of the group, as it perches at the tips of twigs, stems and grasses, but it often does so at greater heights than other species. It will sometimes perch with its abdomen raised above the rest of the body in an obelisk position, like many other meadowhawks. Males bring females down low to weeds, stems and other perches and are even occasionally seen mating on the ground. The female lays eggs alone, but is guarded by the male, as she extrudes eggs along the shore or over a dry pond or pool where they remain undeveloped until the pond fills again.
Southeastern Canada and eastern U.S. west to Texas.