Pheidole in the New World. A dominant, hyperdiverse ant genus. Author Wilson, E. O. text 2003 Harvard University Press Cambridge, MA http://atbi.biosci.ohio-state.edu/HymOnline/reference-full.html?id=20017 book 20017 Pheidole rectispina new species Types Mus. Comp. Zool. Harvard. etymology L rectispina , upright spine. diagnosis Similar in various traits to bilimeki , floridana , hazenae , rectiluma , rectisentis , rectitrudis, sospes , and stomachosa , differing as follows. Major: propodeal spine half as long as propodeal basal face and perpendicular to it; humeri low and subangulate; mesonotal convexity present; postpetiole from above elliptical, with angulate lateral margins; all of dorsal surface of head except occipital lobes, frontal triangle, and midclypeus carinulate; all of mesosoma and most of head and waist foveolate and opaque; anterior fringe of first gastral tergite shagreened. Minor: propodeal spine half as long as the propodeal face and vertical on it; postpetiolar node somewhat depressed; occiput broad, its margin concave; all of head and mesosoma foveolate and opaque, no rugoreticulum and almost no carinulae. Measurements (mm) Holotype major: HW 1.00, HL 1.14, SL 0.56, EL 0.14, PW 0.50. Paratype minor: HW 0.44, HL 0.50, SL 0.46, EL 0.08, PW 0.30. Color Major: dark, even blackish brown. Minor: body medium brown, appendages yellowish brown. Range Atlantic slope of Costa Rica from lowlands to montane forest (Longino 1997); and Belize (Hummingbird Gap, near Stann; Stewart Peck). biology Occurs on the floor of primary rainforest. figure Upper: holotype, major. Lower: paratype, minor. COSTA RICA: La Selva Biological Station, near Puerto Viejo, Heredia (E. O. Wilson). Scale bars = 1 mm.