A rainforest dweller, P. nitella nests in small cavities variously in dead and live wood, on the forest floor and in the low arboreal zone (Longino 1997; Stefan Cover and E. O. Wilson, unpublished notes). A seed cache was found in one nest at La Selva Biological Station, near Puerto Viejo, Costa Rica. (Wilson 2003)
See the description in the nomenclature section.
Keys including this Species
Occurs on the Atlantic slope of Costa Rica at 300–1000 m (Longino 1997); Chocó, Colombia, 760 m; and is widespread in montane and Amazonian Ecuador; a single collection originates from near Belém, Pará, Brazil. (Wilson 2003)
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.
- nitella. Pheidole nitella Wilson, 2003: 473, figs. (s.w.) COSTA RICA.
Unless otherwise noted the text for the remainder of this section is reported from the publication that includes the original description.
DIAGNOSIS Similar in various traits to Pheidole exquisita, Pheidole christopherseni, Pheidole nigricula, Pheidole olsoni, Pheidole protensa, Pheidole pygmaea and Pheidole sagittaria, and distinguished as follows.
Major: yellow; head elongate; eyes set well forward, so that their distance from anterior of head is only a little less than eye Length; propodeal spines reduced to obtuse angles; carinulae extend on head only slightly beyond eyes and are rudimentary on frontal lobes, and rest of body is entirely smooth and shiny.
Minor: eye very large, oval (not tapered), and set far forward on head; propodeum reduced to denticles; occiput broad and weakly concave.
Differs from the closely similar Pheidole exquisita of Ecuador in size, head shape, and details of cephalic sculpture, eye shape, and minor scape length.
MEASUREMENTS (mm) Holotype major: HW 0.58, HL 0.66, SL 0.32, EL 0.10, PW 0.30. Paratype minor: HW 0.34, HL 0.34, SL 0.26, EL 0.06, PW 0.22.
COLOR Major and minor: concolorous medium yellow.
Figure. Upper: holotype, major. Lower: paratype, minor. Scale bars = 1 mm.
COSTA RICA: La Selva Biological Station, near Puerto Viejo, Heredia, col. Stefan Cover. Museum of Comparative Zoology
L nitella, bright, splendid.
- Wilson, E. O. 2003. Pheidole in the New World: A dominant, hyperdiverse ant genus. Cambridge, Mass.: Harvard University Press, [ix] + 794 pp.: 794pp (page 473, fig. major, minor described)