- Orifices of abdominal spiracles IV-VII directed posteriorly
- Pygidium small or very small, usually merely a narrow U-shaped sclerite
- Male with sharply defined presclerites on abdominal segments IV-VII; abdominal sternite VII hypertrophied; abdominal sternite VIII internalized and bilobate apically
- Male biaculeate hypopygium mostly or entirely exposed
- Basal ring of male genital capsule hypertrophied
Molecular Biology and Genetics
Statistics of barcoding coverage
|Specimen Records:||645||Public Records:||206|
|Specimens with Sequences:||522||Public Species:||38|
|Specimens with Barcodes:||420||Public BINs:||43|
|Species With Barcodes:||73|
Locations of barcode samples
Ecitoninae is further broken into two groups in the New World, the tribes Cheliomyrmecini and Ecitonini. The former contains only the genus Cheliomyrmex, and Ecitonini contains four genera, Neivamyrmex, Nomamyrmex, Labidus, and Eciton, the genus after which the group is named. The genus Neivamyrmex is the largest of all army ant genera, containing some 120 species, all in the United States. The most predominant species of Eciton is E. burchellii, whose common name is "army ant" and which is considered to be the archetypal species.
Tribes and genera
- Ecitoninae Forel, 1893
Workers can be recognized by the following features:
- eye reduced to a single ommatidium or absent;
- clypeus narrow (back to front), so that the antennal insertions are close to the anterior margin of the head;
- antennal sockets not concealed by frontal carinae; and
- pygidium simple, unarmed.
In addition, the pronotum and mesonotum are fused into a single structure, and the sting is present and functional. The postpetiole may be present or absent. Most of these features, except the simple pygidium, are seen in some species of the subfamily Cerapachyinae.
- "Subfamily: Ecitoninae". antweb.org. AntWeb. Retrieved 13 October 2013.
- Brady, S. N. G. (2003). "Evolution of the army ant syndrome: the origin and long-term evolutionary stasis of a complex of behavioral and reproductive adaptations". Proceedings of the National Academy of Sciences of the United States of America 100 (11): 6575–6579. Bibcode:2003PNAS..100.6575B. doi:10.1073/pnas.1137809100. PMC 164488. PMID 12750466.