Pheidole rugatula, Wilson, E. O., 2003

Wilson, E. O., 2003, Pheidole in the New World. A dominant, hyperdiverse ant genus., Cambridge, MA: Harvard University Press : 745

Pheidole rugatula Santschi, new status

Pheidole risi var. rugatula Santschi 1933f: 109.

Types Naturhist. Mus. Basel.

Etymology L rugatula , with little wrinkles (rugulae).

diagnosis Similar in various traits to aper , bambusarum , brevicona , dyctiota , laeviventris , lutzi , risii , senilis , sigillata , trachyderma , and traini , differing as follows.

Major: rugoreticulum confined to small patch posterior to antennal fossa on each side of head; entire rest of head carinulate except frontal triangle and mid-clypeus; all of dorsal surface of mesosoma transversely carinulate, and carinulae on pronotal dorsum curve down to pronotal sides as rugulae; hairs along posterior dorsal half of head profile of uniform short length, about half of Eye Length, and those along anterior dorsal half mostly 1.5-2.OX as long; postpetiole from above spinose.

Minor: posterior third of head and all of premesonotal dorsum rugoreticulate; propodeal spines reduced to denticles; occiput only slightly narrowed, but with nuchal collar.

Measurements (mm) Lectotype major: HW 1.34, HL 1.38, SL 0.70, EL 0.14, PW 0.74.

Paralectotype minor: HW 0.64, HL 0.62, SL 0.60, EL 0.06, PW 0.40.

color Major: body dark reddish brown, appendages dark yellow.

Minor: body plain medium brown, appendages brownish yellow.

Range Known only from the type locality.

biology Unknown.

Figure Upper: lectotype, major. Lower: paralectotype, minor. ARGENTINA: Loreto, Misiones. Scale bars = 1 mm.