Pheidole heyeri, Wilson, E. O., 2003

Wilson, E. O., 2003, Pheidole in the New World. A dominant, hyperdiverse ant genus., Cambridge, MA: Harvard University Press : 706

Pheidole heyeri Forel, new status

Pheidole guilelmimuelleri var. heyeri Forel 191 le: 302. Syn.: Pheidole guilelmimuelleri var. ultrix Forel 1912g: 221, n. syn. Types not seen: Pheidole guilelmimuelleri heyeri var. dryas Santschi 1929d: 288 (Rio de Janeiro), Pheidole guilelmimuelleri heyeri var. infans Santschi 1923d: 56 (Santa Catarina, Brazil), and Pheidole guilelmimuelleri heyeri var. injuncta Forel 191 le: 302 (Sao Paulo), which are all unavailable names.

Types Mus. Hist. Nat. Geneve.

Etymology Eponymous.

diagnosis Similar especially to antillana of the Lesser Antilles, but differing in the following combination of traits. Major: shallow scrobes, whose surfaces lack sculpturing; small rugoreticula present mesad to the eyes and on the dorsal pronotal margins; dorsal surface of occiput mostly smooth but with scattered foveae; mesonotal convexity subangulate; postpetiole strongly cornulate.

Minor: occiput and lateral posterior quarters of cephalic dorsum transversely carinulate; humerus subangulate in dorsal-oblique view; most of promesonotum rugulose, with margins loosely rugoreticulate. Color of major and minor: reddish yellow.

Measurements (mm) Lectotype major: HW 2.02, HL 2.16, SL 0.90, EL 0.22, PW 0.82.

Paralectotype minor: HW 0.82, HL 0.86, SL 0.92, EL 0.14, PW 0.54.

color Major: body medium reddish yellow, appendages light reddish yellow.

Minor: body dark reddish yellow, appendages light reddish yellow.

Range Sao Paulo and Rio Grande do Sul states, Brazil.

Biology Unknown.

Figure Upper: lectotype, major. Lower: paralectotype, minor. BRAZIL: Sao Leopoldo, Rio Grande do Sul. Scale bars = 1 mm.