Pheidole stigma , Wilson, E. O., 2003

Wilson, E. O., 2003, Pheidole in the New World. A dominant, hyperdiverse ant genus., Cambridge, MA, USA: Harvard University Press, pp. -1--1: 234

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Pheidole stigma

new species

Pheidole stigma  HNS  new species

Types Mus. Comp. Zool. Harvard.

Etymology Gr stigma  HNS  , mark, spot, with reference to the dark spot on the head of the major.

diagnosis Distinguished within the diligens  HNS  group by the following combination of traits.

Major: pilosity very sparse, generally, and entirely absent on the mesosoma and waist; head light reddish brown with medium brown spot on vertex and medium brown trim on margins of frontal lobes, as illustrated; carinulae limited to anterior half of head, including margins of frontal lobe, and posterior half of dorsal surface of head and all of gaster smooth and shiny; all of mesosoma and waist foveolate and opaque.

Minor: mesosoma devoid of hair; carinulae limited to circular carinulae around antennal fossae; all of mesosoma and petiole, as well as anterior half of head and side of postpetiole, foveolate and opaque, and the rest of the body smooth and shiny; body medium reddish brown, appendages light reddish brown, tarsi yellow.

Compare with anima  HNS  , bruesi  HNS  , diligens  HNS  , gagates  HNS  , geraesensis  HNS  , nubila  HNS  , piceonigra  HNS  , radoszkowskii  HNS  , and triconstricta  HNS  .

Measurements (mm) Holotype major: HW 0.60, HL 0.64, SL 0.76, EL 0.14, PW 0.40.

Paratype minor: HW 1.00, HL 1.00, SL 0.80, EL 0.18, PW 0.52.

Color See in Diagnosis above.

range Known only from the type locality.

Biology The type colony was found beneath a rock in a pasture.

Figure Upper: holotype, major. Lower: paratype, minor. ECUADOR: Banos, near Riobamba, 1800 m (Gary J. Umphrey). Scale bars = 1 mm.