| Pheidole stigma|
The type colony was found beneath a rock in a pasture. (Wilson 2003)
See the description in the nomenclature section.
Keys including this Species
Only known from the type locality.
Distribution based on Regional Taxon Lists
Distribution based on AntMaps
Distribution based on AntWeb specimens
Check data from AntWeb
The following information is derived from Barry Bolton's New General Catalogue, a catalogue of the world's ants.
- stigma. Pheidole stigma Wilson, 2003: 234, figs. (s.w.) ECUADOR.
Unless otherwise noted the text for the remainder of this section is reported from the publication that includes the original description.
Distinguished within the diligens 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.
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.
Figure. Upper: holotype, major. Lower: paratype, minor. Scale bars = 1 mm.
ECUADOR: Baños, near Riobamba, 1800 m, col. Gary J. Umphrey. Museum of Comparative Zoology
Gr stigma, mark, spot, with reference to the dark spot on the head of the major.
- Wilson, E. O. 2003. Pheidole in the New World: A dominant, hyperdiverse ant genus. Harvard University Press, Cambridge, MA. (page 234, fig. major, minor described)