Pheidole laidlowi Mann ^HNS, new status

Pheidole triconstricta var. laidlowi Mann ^HNS 1916: 434.

Types Mus. Comp. Zoology Harvard.

Etymology Eponymous.

Diagnosis A small, yellow, nearly hairless member of the diligens ^HNS group, similar to bruesi ^HNS, diligens ^HNS, inversa ^HNS, radoszkowskii ^HNS, and triconstricta ^HNS, differing by the following combination of traits.

Major: sculpture of dorsal surface of head entirely limited to longitudinal carinula restricted to part of head anterior to the posterior eye margin, with no rugoreticulum, and the frontal lobes bare; promesonotal profile strictly 2-lobed, with the lobes connected by a shallow, saddle-like concavity in dorsal-oblique view; propodeal spine very thin, needle-like; color pale yellow.

Minor: differing from that of the species just listed by its narrow occiput.

Measurements (mm) Lectotype major: HW 0.96, HL 0.98, SL 0.66, EL 0.14, PW 0.48.

Paralectotype minor: HW 0.48, HL 0.56, SL 0.66, EL 0.10, PW 0.34.

Color Major and minor: concolorous pale yellow.

Range Amazonian Brazil and Peru.

Biology Unknown.

Figure Upper: lectotype, major. BRAZIL: Rio Madeira (W. M. Mann). Minor: Cuzco Amazonico, 15 km northeast of Puerto Maldonado, Madre de Dios, Peru (Stefan Cover and John E. Tobin). Scale bars = 1 mm.