Taschenberg’s long-necked ant (Dolichoderus taschenbergi) is a small odorous ant. It occurs in the United States from Maine to North Dakota, south to Georgia and Louisiana, and in Canada from Nova Scotia to Manitoba. It is uncommon throughout its range but is most abundant in the north. It is found in open areas including old fields, woodland edges, and bogs. It forms huge colonies, often with multiple queens and more than 10,000 workers. It constructs igloo-shaped dome nests, 2″ to 8″ in height, using grasses, sphagnum mosses, spruce and pine needles, and other shredded vegetation. It the spring it can sometimes be found massed aboveground warming in the sun.
Workers are uniformly colored. The overall color is sometimes interpreted as “dark brownish-black”, sometimes as “all black”, sometimes as “jet black”. The head and front part of the body are dull, the rear of the body is shiny. The last segment of the front part of the body (propodeum) is an important identifying feature. When viewed from above, the propodeum is squarish, about as long as wide. When viewed from the side, the propodeum is distinctly concave and has the appearance of a bottle opener.