Ectatomminae Emery = Heteroponerinae Bolton new synonym Diagnosis: Presenting the characters of ‘poneromorph’ subfamilies described by Bolton (2003: p.40). Clypeus broadly inserted between frontal lobes (Bolton 2003); anterior clypeal margin with a narrow lamellar apron (Bolton 2003). Torulus not completely fused to frontal lobe (Bolton 2003). Antenna with 12 segments (Bolton 2003). Pronotum with the humeral corners angled, forming a distinct delimitation between the anterior and lateral margins (Lattke 2004). Antero-ventral angle of pronotum triangular (Feitosa 2015). Pretarsus without arolium (Lattke 2004). Petiole pedunculate (Keller 2011). Petiolar node as wide or wider than long (Feitosa 2015). Subpetiolar process very well developed, occupying more than onethird of the ventral portion of the petiolar sternite (Feitosa 2015). Helcium projecting from about midheight of the anterior face of abdominal segment III. Abdominal segment IV presclerites separated from the rest of segment by a constriction or slight thickening (Lattke 1994). Fourth abdominal tergite arched and larger than the sternite, giving the segment a curved appearance (Keller 2011). Tribes: Ectatommini and Heteroponerini Incertae sedis: † Canapone, † Electroponera, † Pseudectatomma. Notes: In spite of the reciprocal monophyly of the subfamilies Ectatomminae and Heteroponerinae, the morphological evidence strongly suggests that all ectaheteromorph genera could be combined into a single subfamily Ectatomminae, which is the oldest available name. Ectatomminae, as defined here, presents a combination of 10 diagnostic characters that can be used to differentiate those ants from any other ant subfamily, making the identification of those groups more accessible.

Published as part of Camacho, G P, Franco, W, Branstetter, M G, Pie, M R, Longino, J T, Schultz, T R & Feitosa, R M, 2022, UCE Phylogenomics Resolves Major Relationships Among Ectaheteromorph Ants (Hymenoptera: Formicidae: Ectatomminae, Heteroponerinae): A New Classification For the Subfamilies and the Description of a New Genus, pp. 6 in Insect Systematics and Diversity 6 (1) on pages 9-10, DOI: 10.1093/isd/ixab026, http://zenodo.org/record/5907609