Strumigenys dolichognatha

Known from a few collections, including forest litter and bromeliad samples.

Identification
Bolton (2000) - A member of the cordovensis complex in the Strumigenys mandibularis-group. The relative position of the distal preapical mandibular dentition is diagnostic of dolichognatha within the cordovensis-complex.

Distribution based on Regional Taxon Lists
Neotropical Region: Brazil, Colombia, Ecuador, Guyana.

Biology
DaRocha et al. (2015) studied the diversity of ants found in bromeliads of a single large tree of Erythrina, a common cocoa shade tree, at an agricultural research center in Ilhéus, Brazil. Forty-seven species of ants were found in 36 of 52 the bromeliads examined. Bromeliads with suspended soil and those that were larger had higher ant diversity. Strumigenys dolichognatha was found in a single bromeliad and was associated with the suspended soil and litter of the plant.

Nomenclature

 *  dolichognatha. Strumigenys (Strumigenys) cordovensis subsp. dolichognatha Weber, 1934a: 40 (w.m.) GUYANA. Raised to species: Brown, 1958c: 223. See also: Bolton, 2000: 534.

Worker
Bolton (2000) - TL 3.7-4.8, HL 0.80-1.07, HW 0.60-0.87, CI 75-81, ML 0.96-1.34, MI 118-125, SL 0.62-0.90, SI 103-112, PW 0.32-0.45, AL 0.72-0.92 (6 measured). Characters of cordovensis complex. Distal preapical tooth of mandible closer to proximal preapical tooth than to apicodorsal tooth. In full-face view outer margins of mandibles strongly divergent anteriorly and sides of head behind eyes divergent posteriorly. Standing hairs on head and alitrunk sparse, stiff and simple, truncated or weakly expanded apically: one in apicoscrobal position; a pair on vertex close to occipital margin; one at pronotal humerus; absent from mesonotum. Petiole and postpetiole with elongate fine curved hairs. First gastral tergite with a few flagellate hairs, all confined to basal quarter of sclerite. Femoral gland bullae small and ovate, located at or proximal of midlength on middle and hind femora. Propodeal lamella with lower lobe longer narrower and more acute than upper lobe; the latter may be reduced to a tiny blunt triangle. Dorsum of petiole node reticulate-punctate. In profile lateral spongiform lobe of petiole extends forward on side almost to level of anterior face of node. Postpetiole disc traversed from front to back by spaced longiudinal costulae. Basigastral costulae in dorsal view sharply defined but short, longer than thickness of posterior spongiform collar of postpetiole but not as long as disc.

Type Material
Syntype workers and males, GUIANA: Kartabo, 25.vii.1920 (W. M. Wheeler) [examined].

References based on Global Ant Biodiversity Informatics

 * Bolton, B. 2000. The Ant Tribe Dacetini. Memoirs of the American Entomological Institute 65
 * Brown W. L. J. 1958.  The neotropical species of the ant genus Strumigenys Fr. Smith: group of cordovensis Mayr. Studia Entomologica. (n.s.)1: 217-224.
 * Brown W. L. Jr. 1962. The neotropical species of the ant genus Strumigenys Fr. Smith: synopsis and keys to the species. Psyche (Cambridge) 69: 238-267.
 * Fernández, F. and S. Sendoya. 2004. Lista de las hormigas neotropicales. Biota Colombiana Volume 5, Number 1.
 * Kempf, W.W. 1972. Catalago abreviado das formigas da regiao Neotropical (Hym. Formicidae) Studia Entomologica 15(1-4).
 * Lapolla, J.S., T. Suman, J. Soso-Calvo and T.R. Schultz. 2006. Leaf litter ant diversity in Guyana. Biodiversity and Conservation 16:491510
 * Sosa-Calvo J., S. O. Shattuck, and T. R. Schultz. 2006. Dacetine ants of Panama: new records and description of a new species. Proceedings of the Entomological Society of Washington 108: 814-821.
 * Weber N. A. 1934. Notes on neotropical ants, including the descriptions of new forms. Revista de Entomologia (Rio de Janeiro) 4: 22-59.