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Pheidole allarmata HNS new species

Types Mus. Comp. Zool. Harvard.

etymology Gr, L allarmata HNS , the "other one" bearing arms, referring to the species' similarity to subarmata HNS and synarmata HNS . diagnosis Similar to hasticeps HNS , subarmata HNS , synarmata HNS , and triplex HNS (see also the somewhat less similar rhytifera HNS ), differing from these and other Pheidole HNS by the following combination of traits.

Major: in side view the frontal lobe is elongated to form a forward-projecting, thin, spine-like lobe; humerus strongly developed as protuberant lobes; postpetiolar node spinose; head quadrate; rear half of head and almost all of body smooth and shiny. Minor: occiput narrowed but lacking a nuchal collar; propodeal spine long, thin, and erect; head and body almost entirely smooth and shiny.

This is probably the series noted by W. L. Brown (1981: 526) as representing a species distinct from subarmata HNS . measurements (mm) Holotype major: HW 1.26, HL 1.28, SL 0.60, EL 0.12, PW 0.74. Paratype minor: HW 0.56, HL 0.56, SL 0.60, EL 0.06, PW 0.36.

Color Major: head reddish brown, gradually deepening from light reddish brown at occiput to dark reddish brown on anterior half of head capsule and on mandibles; mesosoma medium reddish brown; waist, gaster, antennae, and legs light reddish brown. Minor: concolorous yellow to dark brown.

Range An Amazonian species recorded from scattered localities in Brazil, Colombia, Ecuador, Peru, and Suriname.

Biology Two colonies collected by Stefan Cover and John E. Tobin at Cuzco Amazonico, Peru (Cover, collection notes) were in terra firme rainforest, nesting in rotten sticks on the forest floor. The colonies were small, with fewer than 100 workers and a single queen; one of the nests contained a seed cache.

Figure Upper: holotype, major. Lower: paratype minor. BRAZIL: Pirelli Plantation (Iriboca), near Belem, Para (P. F. Darlington). Scale bars = 1 mm.

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Plazi

Source: Plazi.org

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