Pheidole synarmata ^HNS new species

Types Mus. Comp. Zool. Harvard.

Etymology Gr L synarmata ^HNS, with the armed one, referring to other members of the subarmata ^HNS complex.

diagnosis Similar to allarmata ^HNS, cramptoni ^HNS, hasticeps ^HNS, subarmata ^HNS, and triplex ^HNS, differing from these and other Pheidole ^HNS by the following combination of traits.

Major: head elongate; in side view, frontal lobe extending vertically off the dorsal surface of the head as a spine-like projection; promesonotum forming a large, bulbous, smoothly semicircular outline; petiolar spine well-developed and vertical; posterior half of the head capsule and almost all of the body smooth and shiny.

Minor: occiput broad and concave, lacking nuchal collar; promesonotal profile forming a prominent, smooth semicircle; except for the foveolate mesopleuron and lower side of the petiole, the body is completely smooth and shiny.

Measurements (mm) Holotype major: HW 0.92, HL 1.14, SL 0.42, EL 0.12, PW 0.46.

Paratype minor: HW 0.46, HL 0.50, SL 0.42, EL 0.06, PW 0.30.

Color Major: concolorous clear medium yellow.

Minor: concolorous clear light yellow.

range Known from the type locality and from Cuiaba, Mato Grosso, Brazil (J. C. Trager).

Biology Unknown.

Figure Upper: holotype, major. Lower: paratype, minor. GUYANA: Kartabo (William M. Wheeler). Scale bars = 1 mm.