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Black carpenter ants are known to forage up to 100 yd (91 m) in search of food, establishing chemical trails as they forage. They locate food through their sense of smell. [4] Nests can contain thousands of individuals, and such large nests may be noticed by the audible cracking sound the workers produce.
Carpenter ants are generally large ants: workers are 4–7 mm long in small species and 7–13 mm in large species, queens are 9–20 mm long and males are 5–13 mm long. The bases of the antennae are separated from the clypeal border by a distance of at least the antennal scape's maximum diameter.
Black garden ant with the mandibles of an unidentified creature.. The black garden ant (Lasius niger), also known as the common black ant, is a formicine ant, the type species of the subgenus Lasius, which is found across Europe and in some parts of North America, South America, Asia and Australasia.
The eastern velvet ant is the largest of the velvet ant species in the eastern United States, attaining an approximate length of 0.75 in (1.9 cm). Adults display aposematic coloration, consisting of black overall coloring with an orange-red pattern on the dorsal surface of the thorax and abdomen.
Cephalotes atratus is a large, mainly black ant; workers are 8 to 14 mm (0.3 to 0.6 in) in length and females 20 mm (0.8 in). Males are up to 14 mm (0.55 in) and have black heads and thoraxes, and dark reddish-brown gasters and limbs. The workers are spiny and heavily armoured with powerful mandibles for chewing through wood. [5]
Ants that are commonly called pests are red imported fire ants, acrobat ants, big-headed ants, carpenter ants, cornfield ants, harvester ants, larger yellow ant, little black ants, mound ants, spinewaisted ants, and thief ants. [7] It is known that these pest species can survive through Kansas' less harsh winters. [8]
The longhorn crazy ant is able to invade new habitats and outcompete other species of ants. In 1991, in the large closed dome of the research station Biosphere 2 in the Arizona Desert, no particular ant species was dominant. By 1996, the longhorn crazy ant had virtually replaced all the other ant species.
Poneracantha triangularis is a relatively large, black ant with more reddish legs that is characterized by deep longitudinal grooves and ridges that the run the lengths of the head, mesosoma and gaster.