Pheidole rosula, Wilson, E. O., 2003

Wilson, E. O., 2003, Pheidole in the New World. A dominant, hyperdiverse ant genus., Cambridge, MA: Harvard University Press : 743

Pheidole rosula new species

Types Mus. Comp. Zool. Harvard.

Etymology L rosula , little rose, alluding to similarity with P. rosae .

Diagnosis Similar in various characters to species listed in heading above, especially rosae , and distinguished as follows. Major: reddish yellow; frontal lobes extended forward as low but still conspicuous lobes, in side view; shallow antennal scrobes present, with surfaces smooth except for scattered foveae; postpetiole spinose; rugoreticulum on each side of head extends from eye to antennal fossa, posterior to eye for about an Eye Length distance, and anterior almost to the anterior genal border; carinulae extend to occiput, which is smooth; anterior half of pronotal dorsum carinulate; pilosity dense and long, with some hairs longer than Eye Length.

Minor: most of head and mesosoma variably foveolate; frontal lobes carinulate; humerus in dorsal-oblique view denticulate; propodeal spines reduced to denticles.

Measurements (mm) Holotype major: HW 1.22, HL 1.28, SL 0.54, EL 0.16, PW 0.72.

Paratype minor: HW 0.62, HL 0.64, SL 0.54, EL 0.12, PW 0.40.

color Major: body and mandibles reddish yellow, appendages plain dark yellow.

Minor: concolorous light reddish yellow.

Range Known only from the type locality.

Biology Unknown.

Figure Upper: holotype, major. Lower: paratype, minor. ARGENTINA: Palermo, Buenos Aires (R. Thaxter). Scale bars = 1 mm.