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Ants (family Formicidae in the order Hymenoptera) are the most species-rich of all social insects, with more than 12,000 described species and many others awaiting description. [1] Formicidae is divided into 21 subfamilies , of which 17 are extant and four subfamilies are extinct , described from fossils .
Ants (family Formicidae in the order Hymenoptera) are the most species-rich of all social insects, with more than 12,000 described species and many others awaiting description. [1] Formicidae is divided into 21 subfamilies , of which 17 contain extant taxa , while four are exclusively fossil . [ 2 ]
Carpenter ant (Camponotus sp.)The Formicinae are a subfamily within the Formicidae containing ants of moderate evolutionary development.. Formicines retain some primitive features, such as the presence of cocoons around pupae, the presence of ocelli in workers, and little tendency toward reduction of palp or antennal segmentation in most species, except subterranean groups.
Ants vary in colour; most ants are yellow to red or brown to black, but a few species are green and some tropical species have a metallic lustre. More than 13,800 species are currently known [ 37 ] (with upper estimates of the potential existence of about 22,000; see the article List of ant genera ), with the greatest diversity in the tropics.
Formica is a genus of ants of the subfamily Formicinae, including species commonly known as wood ants, mound ants, thatching ants, and field ants. Formica is the type genus of the Formicidae, and of the subfamily Formicinae. [3] The type species of genus Formica is the European red wood ant Formica rufa. [1]
The antennae of the worker ants contain nine segments which is common among all species of Brachymyrmex. [13] [12] B. patagonicus have long hairs along the mesosoma and relatively large eyes compared to the other species in the Brachymyrmex genus. [13] On the dorsal surface of the gaster, the distribution of appressed hairs is sparse. [13]
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.
Formica exsecta (the narrow-headed ant or excised wood ant) is a species of ant found from Western Europe to Asia. A rare formicine ant with a deeply excised head, F. exsecta forms small mounds up to around a foot in height consisting of much finer material than that used by "true" wood ants of the F. rufa group .