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The Neotropical army ant Eciton burchellii has an estimated 350 to 500 animal associates, the most of any one species known to science. [31] It has been speculated that the nocturnal foraging of some army ant species is done to reduce kleptoparasitism by birds, since the bird kleptoparasites of army ants are diurnal. [12]
Eciton burchellii is a species of New World army ant in the genus Eciton. This species performs expansive, organized swarm raids that give it the informal name, Eciton army ant. [2] This species displays a high degree of worker polymorphism. Sterile workers are of four discrete size-castes: minors, medias, porters (sub-majors), and soldiers ...
About 50 of the approximately 200 species of antbirds specialize in preying on insects fleeing the ants, getting up to half their food this way. Some of these birds actively check army-ant bivouacs each morning and follow the foraging trail to the swarm front, where they take positions based on their species' relations in a dominance hierarchy.
Carebara species have permanent nests, while real army ants have only temporary nests (Dorylus) or form a bivouac with their own bodies (Eciton). Colonies of real army ants have only one queen, so when she dies, the workers may try to join another colony, or the rest of the colony also dies; Carebara colonies can have many (up to 16) queens.
Formicoids include such widespread and species-rich subfamilies as Myrmicinae, Formicinae and Dolichoderinae, as well as the army ants . Non-formicoids comprise five "poneroid" subfamilies ( Agroecomyrmecinae , Amblyoponinae , Paraponerinae , Ponerinae , and Proceratiinae ), Leptanillinae , about which little is known, and Martialinae , the ...
Eciton hamatum is a species of army ant in the subfamily Dorylinae; it is found from Mexico to central Brazil and Bolivia.The species differs from Eciton burchellii, in that it does not fan out into the underbrush when foraging.
Army ant Eciton mexicanum workers with N. kronaueri attached between the ants’ petiole and postpetiole.. N. kronaueri is noted for its unusual mechanism of phoretic transport - it uses its mouthparts (the mandibles) to attach itself to the waist (between the petiole and postpetiole) of medium sized ant workers of the species Eciton mexicanum.
Neivamyrmex nigrescens is a North American species of army ant in the genus Neivamyrmex. [1] The species is found in the United States and Mexico, and is the most widely distributed Neivamyrmex species in the United States. Due to its wide range, it has become the most studied and well-known species in its genus. [2]