Pheidole peregrina Wheeler

Wilson, E. O., 2003, Pheidole in the New World. A dominant, hyperdiverse ant genus., Cambridge, MA, USA: Harvard University Press, pp. -1--1: 214

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Pheidole peregrina Wheeler


Pheidole peregrina Wheeler  HNS 

Pheidole peregrina Wheeler  HNS  1916p: 181. Syn: Pheidole impariceps  HNS  Santschi 1923d: 47, n. syn.; Pheidole impariceps var. fusciclava  HNS  Santschi 1923d: 48, n. syn.

Types Mus. Comp. Zool. Harvard.

Etymology L peregrina  HNS  , traveling, foreign. Referring to discovery of the type colony on a floating log.

Diagnosis A small, yellow member of the diligens  HNS  group whose major has posterior two-thirds of head capsule smooth and shiny, rugoreticulum present as a small patch just mesad to the eye, moderately abundant pilosity, and short equilaterally triangular propodeal spine in side view.

Similar to blumenauensis  HNS  , laevifrons  HNS  , mooreorum  HNS  , rochai  HNS  , and vafra  HNS  , differing in many details of body form, sculpturing, and pilosity, as figured.

See also the somewhat less similar lemur  HNS  , pubiventris  HNS  , seeldrayersi  HNS  , spilota  HNS  , variegata  HNS  , venatrix  HNS  , and zelata  HNS  . Measurements (mm) Lectotype major: HW 1.00, HL 1.06, SL 0.74, EL 0.14, PW 0.56. Paralectotype minor: HW 0.54, HL 0.64, SL 0.76, EL 0.14, PW 0.36. color Major: concolorous dark yellow.

Minor: head light brownish yellow, rest of head and appendages clear dark yellow.

Range Known from several localities in Sao Paulo state.

biology On the type series, by Hermann von Ihering, as quoted by W. M. Wheeler (1916: 180-181): "One morning, while [Mr. Gaste, a local naturalist] was on the island of San Sebastian, he found a tree trunk that had floated to the shore during the night and was filled with a living ant-colony belonging to a species of Pheidole  HNS  [ peregrina Wheeler  HNS  ] unknown to me. San Sebastian is situated some kilometers off the coast of the mainland. Of course, we cannot say how long this log had been floating in the water before it reached the island." It may be that peregrina  HNS  , like the anatomically similar and widespread vafra  HNS  , is a specialist in marginal habitats. The types of the synonymous impariceps var. fusciclava  HNS  were collected on another island in the same area, Ilha dos Alcatrazes.

figure Upper: lectotype, major. Lower: paralectotype, minor. BRAZIL: Isla Sao Sebastiao, Sao Paulo. Scale bars = 1 mm.