SE U.S. to Paraguay and Bolivia, W. Indies (brunneus in the sense of Brown 1976, which includes ruginodis).
Literature records: “Paraguay” (s. loc.) (Brown 1976).
Odontomachus brunneus is a North American species unlikely to be conspecific with South American forms. Name almost certainly refers to Odontomachus sp. alw-01.
Molecular Biology and Genetics
Statistics of barcoding coverage: Odontomachus brunneus
Public Records: 0
Specimens with Barcodes: 2
Species With Barcodes: 1
Ants of the genus Odontomachus are commonly called trap-jaw ants, due to the large, straight mandibles, which can be opened to 180 degrees and snapped shut on prey. When sensory hairs on the inside of the mandibles are touched, the trap jaw is triggered. The mandibles also permit slow and fine movements for other tasks such as nest building and care of larvae.
Trap-jaw ants of this species have the fastest moving predatory appendages within the animal kingdom. One study recorded peak speeds of between 126 and 230 km/h (78 - 143 mph), with the jaws closing within just 130 microseconds on average. The peak force exerted was in the order of 300 times the body weight of the ant. The ants were also observed to use their jaws as a catapult to eject intruders or fling themselves backwards to escape a threat.
- "Odontomachus brunneus". Integrated Taxonomic Information System.
- Patek SN, Baio JE, Fisher BL, Suarez AV (22 August 2006). "Multifunctionality and mechanical origins: Ballistic jaw propulsion in trap-jaw ants". Proceedings of the National Academy of Sciences 103 (34): 12787–12792. doi:10.1073/pnas.0604290103. PMC 1568925. PMID 16924120.
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