Strumigenys missouriensis

Identification
Bolton (2000) - A member of the Strumigenys pulchella-group. Very closely related to Strumigenys reflexa but quickly distinguished as in missouriensis most or all of the large hairs on the lateral clypeal margins curve anteriorly, whereas in reflexa all hairs on the lateral clypeal margins are markedly reflexed, curving posterolaterally. See also under Strumigenys pulchella.

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



Nomenclature

 *  missouriensis. Strumigenys (Cephaloxys) missouriensis Smith, M.R. 1931c: 701, pl. 4, fig. 14 (w.) U.S.A. Brown, 1953g: 72 (q.). Combination in S. (Trichoscapa): Smith, M.R., 1947f: 587; Creighton, 1950a: 307; in Smithistruma: Smith, M.R., 1951a: 828; Brown, 1953g: 72; in Pyramica: Bolton, 1999: 1673; in Strumigenys: Baroni Urbani & De Andrade, 2007: 124. Senior synonym of sculpturata: Smith, M.R. 1951a: 828; Brown, 1953g: 72. See also: Wilson, 1954: 485; Bolton, 2000: 121.
 * sculpturata. Strumigenys (Cephaloxys) sculpturata Smith, M.R. 1931c: 706, pl. 4, fig. 15 (w.) U.S.A. Combination in S. (Trichoscapa): Smith, M.R., 1947f: 587; Creighton, 1950a: 310. Junior synonym of missouriensis: Smith, M.R. 1951a: 828; Brown, 1953g: 72.

Worker
Bolton (2000) - TL 2.0-2.2, HL 0.54-0.60, HW 0.38-0.42, CI 68-72, ML 0.08-0.10, MI 13-18, SL 0.26-0.31, SI 69-75, PW 0.25-0.28, AL 0.54-0.60 (10 measured).

Anterior clypeal margin broadly shallowly convex to almost transverse. Clypeal dorsum flat to shallowly depressed, usually hairless from about centre to posterior border. Anterior clypeal margin with 1-2 pairs of hairs that curve away from the midline, directed laterally or posterolaterally; hairs on lateral clypeal margins mostly or entirely curved anteriorly. Pilosity of head and body otherwise as Strumigenys reflexa.

Type Material
Bolton (2000) - Syntype workers, U.S.A. Missouri, Columbia, 20. viii. 1929 (M. Talbot) [examined].