Key to Pheidole majors and minors of Borneo

This worker key is based on: [[Media:Eguchi 2001a.pdf| Eguchi, K. 2001a. A revision of the Bornean species of the ant genus Pheidole (Insecta: Hymenoptera: Formicidae: Myrmicinae). Tropics Monograph Series. 2:1-154. PDF]]

This key is designed to be used with samples that include both the major and minor workers from the same colony.

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 * Pheidole
 * Key to Pheidole majors of Borneo
 * Key to Pheidole minors of Borneo

1

 * Antenna with 3-segmented club . . . . . 6


 * Antenna with 5-segmented club, or without conspicuous club . . . . . 2

2
return to couplet #1
 * Apical five antennal segments distinctly elongate and forming conspicuous club in both the subcastes; posterior part of head never forming elongate neck in the minor; hypostoma of the major bearing three low median processes; low subpetiolar process present in the major . . . . . 3


 * Antenna lacking conspicuous club in both the subcastes; posterior part of head of the minor forming elongate neck; hypostoma of the major lacking distinct median processes; subpetiolar process absent in both the subcastes . . . . . 4