Pheidole dumicola ^HNS new species

Types Mus. Comp. Zool. Harvard.

Etymology L dumicola ^HNS, dweller in thorn-bush.

Diagnosis Similar to charazana ^HNS and floricola ^HNS, differs as follows.

Major: head subrectangular and moderately elongate, with straight sides; antennal scrobes present; most of anterior half of head rugoreticulate, including outer margins of frontal lobes and all of genae but not antennal fossae, frontal triangle or midclypeus; humerus in dorsal-oblique view raised and lobose; all of mesosoma foveolate; postpetiole from above spinose.

Minor: pilosity sparse, with hairs on mesosomal dorsum consisting of well-spaced pairs of equal length; humerus in dorsal-oblique view subangulate; occiput broad, its margin straight; postpetiole from above large, circular, nearly 2X broader than petiole.

Measurements (mm) Holotype major: HW 0.82, HL 1.00, SL 0.44, EL 0.12, PW 0.46.

Paratype minor: HW 0.38, HL 0.46, SL 0.40, EL 0.06, PW 0.26.

color Major and minor: light yellowish brown.

Range Known only from the type locality.

biology The type series, including winged reproductives, was collected from a soil nest in second-growth thorn forest, on 28-29 August 1953.

Figure Upper: holotype, major. Lower: paratype, minor. MEXICO: 10 km east of Campeche, Yucatan Peninsula (E. O. Wilson). Scale bars = 1 mm.