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Cherry Bluet Damsel Fly

Enallagma concisum

Description:

The front of the male's head is bright red-orange with a narrow black stripe. The top is black with two transverse orange postocular spots confluent with occipital bar to form a single narrow orange band. The mddorsal carina and stripe are both black, with the latter no more than a third the width of the mesepisterna. The antehumeral stripe is red-orange and nearly half as wide as the middorsal stripe and more than half as wide as the humeral stripe. There is an abbreviated black line on the interpleural suture and a slightly wider line on the metapleural suture. The remainder of the pterothorax is red-orange, quickly fading to yellow or cream color. The legs are entirely orange armed with dark spurs. The abdomen is red-orange dorsally, becoming paler laterally, and marked with black. Except for the apical margin the entire dorsum of segment 1 is black. A full-length black stripe extends dorsally on segment 2 that is thin basally, widening considerably to a large spot over the apical half of the segment. There is a dorsal black stripe on the apical 1/3 to 4/5 of segment 3 that is truncated basally. The entire dorsum of segments 4-7 is black except for a broad, pale band basally. Segment 7 also bears a narrow pale apical ring, dorsally. Segments 8-10 are black dorsally except for a pale narrow apical rings that is sometimes present. The cerci are longer than segment 10 and orange or tan later ally, but distinctly white medially with dark tips. The pale paraprocts are 1/2 to 2/3 the length of the cerci with their upper surface straight when viewed laterally. Females are similar to males, but with darker heads. The pale areas are more yellow and there are distinct small pits medially on the middle lobe of prothorax. The rest of the thorax is patterned as in the male, but with a slightly wider humeral stripe and pale areas yellow or yellow-green. The mesostigmal plates are generally triangular with a distinct pale tubercle on the posteromedial corners. The posterior and lateral borders are also pale. The legs are paler, more yellow or tan, and the femora have a dark stripe. The pale areas of the abdomen are more yellow-green or tan. Segments 1-2 are like those of the male, but with the black stripe on the latter not as narrowed basally. The dorsum of segments 3-10 is nearly all black, only interrupted by a pale ring on segments 7-10 and basal ring on segments 3-7. There is a s light subapical expansion of the stripe on segments 3-6. [Source: www.OdonataCentral.org]

Habitat:

Sand-bottomed lakes and ponds, generally with ample emergent vegetation and lily pads. [Source: www.OdonataCentral.org]

Notes:

Although the different web guides tend to place this Damsel Fly in the locales of sand bottomed lakes and ponds, this specimen was found in my backyard which is grassy, partial wetland/marsh type habitat.

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Miguel.Denyer
Spotted by
Miguel.Denyer

Van Buren Township, Michigan, USA

Spotted on Jul 12, 2012
Submitted on Jul 27, 2012

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