Strumigenys laevinasis

Identification
Bolton (2000) - A member of the clypeata group.

Distribution based on Regional Taxon Lists
Nearctic Region: United States.



Nomenclature

 *  laevinasis. Strumigenys (Cephaloxys) clypeata var. laevinasis Smith, M.R. 1931c: 701, pl. 3, fig. 11 (w.) U.S.A. Brown, 1953g: 62 (q.). Combination in S. (Trichoscapa): Smith, M.R., 1947f: 587; Creighton, 1950a: 308; in Smithistruma: Smith, M.R., 1951a: 827; Brown, 1953g: 61; in Pyramica: Bolton, 1999: 1673. Subspecies of pilinasis: Creighton, 1950a: 308. Raised to species: Brown, 1953g: 61; in Strumigenys: Baroni Urbani & De Andrade, 2007: 122. See also: Bolton, 2000: 105.

Worker
Bolton (2000) - TL 2.2-2.5, HL 0.61-0.67, HW 0.42-0.46, CI 67-70, ML 0.10-0.13, MI 16-21, SL 0.30-0.36, SI 72-80, PW 0.26-0.30, AL 0.62-0.68 (12 measured).

Very close to Strumigenys pilinasis and matching all features mentioned there except for clypeal pilosity, which here is much longer and finer. Hairs on clypeal dorsum fine and filiform, acute apically; in full-face view hairs directed anteriorly and away from the midline. In profile hairs on posteromedian area (i .e. in from the marginal zones) distinctly elevated, inclined anteriorly or sweeping forward and upward ; those closer to the margins curved toward the adjacent margin. In full-face view hairs projecting from lateral clypeal margins directed anterolaterally or with an extremely feeble posterior curvature; these hairs are not, or only fractionally, longer than those that arise mid-dorsally.

Type Material
Bolton (2000) - Lectotype worker (by designation of Brown, 1 953a: 62) and paralectotype workers, U.S.A. : Mississippi, Louisville, 1 5. v. 1930 (M.R. Smith) [examined].