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 alacris Santschi, new status Pheidole flavens st. alacris Santschi 1923d: 61. Syn.: Pheidole flavens var. mediorubra Santschi 1933f: 107, n. syn. Types Naturhist. Mus. Basel. Etymology L alacris , active, eager. diagnosis Similar in various traits to species listed in the heading above, distinguished as follows. Major: brown, with yellow legs; entire dorsum of head except for frontal triangle and midclypeus carinulate; anterior third of pronotal dorsum covered by broken transverse carinulae; all of dorsal surface of head and all of mesosoma foveolate; in side view mesonotal convexity present, although very low; postpetiole seen from above elliptical. Minor: eye set well forward on head; propodeal spine equilaterally triangular; all of head and mesosoma foveolate; occiput narrowed somewhat, its margin straight; nuchal collar absent. Measurements (mm) Lectotype major: HW 0.94, HL 0.96, SL 0.52, EL 0.12, PW 0.50. Paralectotype minor: HW 0.42, HL 0.48, SL 0.42, EL 0.08, PW 0.28. color Major: body and mandibles medium brown; other appendages dark yellow. Minor: concolorous light brown. Range Known only from the type locality. Biology Unknown. figure Upper: lectotype, major. Lower: paralectotype, minor. ARGENTINA: Estacion Sosa, Entre Rios. Scale bars = 1 mm.