This tiny species inhabits mature rainforest where it nests in rotten hollow twigs in leaf litter on the forest floor. (Wilson 2003)
See the description in the nomenclature section.
Keys including this Species
Atlantic lowlands to 800 m in Costa Rica (Longino 1997).
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.
- nigricula. Pheidole nigricula Wilson, 2003: 472, 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.
Major: blackish brown; very small; head elongate; frontal triangle not demarcated; eyes placed well forward on head; humerus low and lobate; propodeal spines equilaterally triangular; postpetiole from above elliptical; dorsal surface of head, including occiput but not midclypeus, foveolate; mesosoma almost entirely smooth and shiny.
Minor: carinulae limited to antennal fossae; all of head and mesosoma smooth and shiny; propodeal spines moderately long, and thin; occiput broad, its margin weakly concave, and lacking nuchal collar.
MEASUREMENTS (mm) Holotype major: HW 0.56, HL 0.70, SL 0.26, EL 0.10, PW 0.34. Paratype minor: HW 0.34, HL 0.40, SL 0.30, EL 0.06, PW 0.24.
COLOR Major: concolorous blackish brown, appendages medium brown. Minor: sides of mesosoma medium to dark reddish brown; rest of body, and appendages, dark, almost blackish brown.
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 nigricula, little dark one.
- Wilson, E. O. 2003. Pheidole in the New World: A dominant, hyperdiverse ant genus. Harvard University Press, Cambridge, MA. (page 472, fig. major, minor described)