Strumigenys cincinnata

One of the few specimens of this species was collected from a forest with rocky soil.

Identification
Bolton (2000) - A member of the Strumigenys hyphata-group. This small species is closely related to Strumigenys hyphata but the two are immediately isolated by their unique clypeal pilosities.

Distribution based on Regional Taxon Lists
Neotropical Region: Brazil.

Nomenclature

 *  cincinnata. Smithistruma cincinnata Kempf, 1975a: 419, figs. 8-10 (w.) BRAZIL. Combination in Pyramica: Bolton, 1999: 1673; in Strumigenys: Baroni Urbani & De Andrade, 2007: 117. See also: Bolton, 2000: 198.

Worker
Bolton (2000) - TL 1.6-1.8, HL 0.46-0.48, HW 0.30-0.32, CI 65-68, ML 0.07-0.08, MI 15-18, SL 0.20-0.22, SI 67-69, PW 0.19-0.21, AL 0.43-0.47 (3 measured).

Lateral margins of clypeus with a dense row of narrowly spatulate curved hairs that are directed anteriorly. Anterior clypeal margin with a row of 4-6 smaller spatulate hairs that project anteriorly and are curved downward. Dorsum of clypeus immediately behind anterior margin with a transverse row of erect spatulate short hairs that curve posteriorly and toward the midline. Posterior to this row the clypeal dorsum with a transverse row of 4 longer, apically thickened standing hairs that arch toward the midline; posterior to this, at the clypeal suture, with a transverse row of 4 even longer hairs that also curve medially. In addition the clypeal dorsum, immediately above the lateral marginal row of curved hairs, with one or two erect and medially curved hairs on each side. Upper scrobe margin with 3-4 freely laterally projecting flagellate hairs. Leading edge of scape with 4 long wire-like hairs that are hook-shaped or shaped like question-marks; basal three of these are hooked toward the base of the scape, the apical one is hooked toward its apex. All dorsal surfaces of head and body, from clypeus to postpetiole, reticulate-punctate.

Type Material
Bolton (2000) - Holotype worker, BRAZIL: Amazonas, km. 49 Manaus to Itacoatiara Rd, 24.viii.1962 (W.L. Brown); paratype workers, BRAZIL: AM, 20-25 km. N and NE of Manaus, viii-ix.1962 (W.L. Brown); AM, Ponte Negra, N of Manaus, i.ix.1962 (W.L. Brown) [examined].

References based on Global Ant Biodiversity Informatics

 * Franco W., N. Ladino, J. H. C. Delabie, A. Dejean, J. Orivel, M. Fichaux, S. Groc, M. Leponce, and R. M. Feitosa. 2019. First checklist of the ants (Hymenoptera: Formicidae) of French Guiana. Zootaxa 4674(5): 509-543.
 * 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
 * Silva T. S. R., and R. M. Feitosa. 2019. Using controlled vocabularies in anatomical terminology: A case study with Strumigenys (Hymenoptera: Formicidae). Arthropod Structure and Development 52: 1-26.
 * 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.
 * Sosa-Calvo J., T. R. Schultz, and J. S. LaPolla. 2010. A review of the dacetine ants of Guyana (Formicidae: Myrmicinae). Journal of Hymenoptera Research 19: 12-43.