
The Common Sanddragon is one of the dragonfly species in the Algonquin Park field that is not found in the Ottawa-Gatineau region. A member of the clubtail family, it is well-marked with a mottled green and brown thorax reminiscent of a Harlequin Darner and uniquely-shaped markings down the length of the abdomen to segment 7: they look like goblets in the male, and start out as goblet-shaped in the female but gradually lose the stem. Their legs are very short for a dragonfly, and mature males have green eyes while females have gray or brown eyes. The appendages in both sexes are pale, and they are the only dragonfly in our region which has pale appendages, a mottled thorax, and brown spots at the base of each wing. Its larvae live in rivers, lakes, and streams with sandy bottoms, and due to its short legs, the adults perch horizontally on the sandy beaches and banks of its rivers rather than hanging from trees or in the vegetation. At the time of the printing of the first edition of the Algonquin field guide, it had not been recorded within the park and was only known from a few sites in Peterborough County and a single record from Windsor in Ontario’s deep south.
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