Robert J. Hamton (in litt. 1990): the majors and minors were foraging in a single file to dead moths at a blacklight (ultraviolet light used to attract insects). (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.
- setsukoae. Pheidole setsukoae Wilson, 2003: 597, figs. (s.w.) MEXICO.
Unless otherwise noted the text for the remainder of this section is reported from the publication that includes the original description.
DIAGNOSIS A member of the pilifera group uniquely distinguished within not just Pheidole but ants as a whole by the phragmotic condition of the occiput of the major, as illustrated. Also distinctive in the major, although not unique, are the lack of hypostomal dentition; the high, smoothly rounded outline of the promesonotum in side view; the dense parallel longitudinal carinulae that radiate from the antennal fossae and antennal lobes to the sides of the head; and the conulate postpetiolar node. The minor is typical of the “bicarinata complex” (see under Pheidole bicarinata).
MEASUREMENTS (mm) Holotype major: HW 1.38, HL 1.54, SL 0.62, EL 0.14, PW 0.76. Paratype minor: HW 0.50, HL 0.54, SL 0.60, EL 0.12, PW 0.30.
COLOR Major: concolorous clear yellow with a very slight orange tinge (“light orange”).
Minor: clear medium yellow; dorsal surface of head slightly infuscated, i.e., dark yellow to light brownish yellow.
Figure. Upper: holotype, major. Lower: paratype, minor. Scale bars = 1 mm.
MEXICO: 59 km north of Culiacan, Sinaloa, col. Robert J. Hamton. Museum of Comparative Zoology
Named after Barbara Setsuko Hamton.
- Wilson, E. O. 2003. Pheidole in the New World: A dominant, hyperdiverse ant genus. Harvard University Press, Cambridge, MA. (page 597, fig. major, minor described)