The type colony was found in terra firme rainforest, nesting in an epiphyte mass on a large fallen tree. A second colony was discovered at the same locality and habitat, nesting beneath the bark of a fallen log at the edge of a tree gap. (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
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The following information is derived from Barry Bolton's New General Catalogue, a catalogue of the world's ants.
- tobini. Pheidole tobini Wilson, 2003: 356, figs. (s.w.) PERU.
Unless otherwise noted the text for the remainder of this section is reported from the publication that includes the original description.
Major: dark brown; head narrowed toward occiput in side view, and subrectangular in full-face view; occipital cleft deep; posterior fourth of head, including occiput, and frontal lobes longitudinally carinulate, contrasting with the mostly rugoreticulate anterior threefourths of the head; humerus in dorsal-oblique view subangulate; petiolar peduncle thin, and node in side view tapering almost to a point at the apex; anterior half of the first gastral tergite shagreened and opaque.
Minor: occiput constricted to a neck with a broad nuchal collar; petiolar peduncle slender.
MEASUREMENTS (mm) Holotype major: HW 1.68, HL 1.80, SL 1.00, EL 0.22, PW 0.80. Paratype minor: HW 0.56, HL 0.82, SL 1.12, EL 0.14, PW 0.44.
COLOR Major: head dark reddish brown, body dark and in some places blackish brown.
Minor: head, mesosoma, and petiolar peduncle medium brown; gaster and rest of waist light brown; appendages light brown.
Figure. Upper: holotype, major. Lower: paratype, minor. Scale bars = 1 mm.
PERU: Cuzco Amazónico, 15 km northeast of Puerto Maldonado, Madre de Dios, col. Stefan Cover and John E. Tobin. Museum of Comparative Zoology
Named after John E. Tobin, one of the collectors, and a student of the Amazon arboreal ant fauna.
- Wilson, E. O. 2003. Pheidole in the New World: A dominant, hyperdiverse ant genus. Harvard University Press, Cambridge, MA. (page 356, fig. major, minor described)