Rather large or medium sized, black with deep purple sheen. Beak and legs black, hind legs heavily scaled, last two tarsal joints and part of preceding one white. Thorax with pale yellowish scales scattered over black background, abdomen unbanded. Very characteristic mosquito, recognized at glance by metallic purple sheen and white hind feet.
Altogether, while this species is sometimes common and bites hard, it can scarcely be considered a pestiferous species, because it does not leave the woods and breeds only in such swampy areas as are not often visited.
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