Pheidole macracantha ^HNS new species

Types Mus. Comp. Zool. Harvard.

Etymology Gr macracantha ^HNS, large thorn, alluding to propodeal spine.

Diagnosis Tentatively placed in the tristis ^HNS group because of its larger size, macracantha ^HNS is similar to cataphracta ^HNS of the punctatissima ^HNS group, differing in the minor caste as follows: much larger; occiput in full face strongly convex instead of concave; pilosity denser and longer; first gastral tergite mostly shagreened.

measurements (mm) Holotype minor: HW 0.72, HL 0.76, SL 0.78, EL 0.12, PW 0.46.

Color Concolorous yellow.

range Known only from the type locality.

Biology Unknown.

Figure Holotype, minor. PANAMA: Guipe (J. Zetek). Scale bar = 1 mm.