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|See also: Wilson, 2003A: 541.|
Types Natural History Museum of Los Angeles County; Mus. Comp. Zool. Harvard; Amer. Mus. Nat. Hist.
Etymology Named after Richard F. Dwyer, who sponsored the Snelling collecting tour of Las Tres Marias.
Major: very large; head disproportionately large, with Head Width more than 2.5X Pronotal Width; head tapered strongly toward occiput in side view; in full-face view, occiput deeply and subangularly concave; median ocellus present; small patch of rugoreticulum present laterad to each antennal fossa.
Minor: propodeal spine of medium length; occiput in full-face view broad and weakly concave. Measurements (mm) Paratype major: HW 2.56, HL 2.58, SL 1.24, EL 0.24, PW 1.00. Paratype minor: HW 0.66, HL 0.74, SL 0.76, EL 0.12, PW 0.42. color Major and minor: concolorous medium reddish brown.
Range Known only from the type locality.
Figure Upper: paratype, major. Lower: paratype, minor. MEXICO: Isla Maria Cleofas, Las Tres Marias, Nayarit (Roy R. Snelling). Scale bars = 1 mm.
Type specimens: Paratype: fmnhins0000077023, fmnhins0000083045, fmnhins0000083046, fmnhins0000083047, fmnhins0000083048, fmnhins0000083049, fmnhins0000083050, fmnhins0000083051, fmnhins0000083052; paratype of Pheidole dwyeri: casent0901587, casent0901588; Paratype, Paratype, Paratype(s): fmnhins0000077024