Pheidole astur

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Pheidole astur
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Myrmicinae
Tribe: Attini
Genus: Pheidole
Species: P. astur
Binomial name
Pheidole astur
Wilson, 2003

MCZ Pheidole astur hal2.jpg

MCZ Pheidole astur had1 6.jpg

Specimen Label


This large species occurs in lowland rainforest over a wide part of South America. At Cuzco Amazónico, near Puerto Maldonado, Peru, Stefan Cover (unpublished collection notes) reports colonies nesting in soil, and minors foraging on the surface of soil and leaf litter. (Wilson 2003)

Identification

See the description in the nomenclature section.

Keys including this Species

Distribution

I have examined material of astur from French Guiana, Suriname, and Colombia, as well as Amazonian Ecuador, Peru, and Bolivia. (Wilson 2003)

Distribution based on Regional Taxon Lists

Neotropical Region: Bolivia, Brazil, Colombia, Ecuador, French Guiana, Guyana, Peru (type locality), Suriname.

Distribution based on AntMaps

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Distribution based on AntWeb specimens

Check data from AntWeb

Biology

Castes

Worker

Minor

Major

Nomenclature

The following information is derived from Barry Bolton's New General Catalogue, a catalogue of the world's ants.

  • astur. Pheidole astur Wilson, 2003: 268, figs. (s.w.) PERU.

Unless otherwise noted the text for the remainder of this section is reported from the publication that includes the original description.

Description

A member of a complex of Pheidole species with giant majors covered by short, bristly hair, in the larger fallax group, comprising Pheidole astur, Pheidole oxyops, Pheidole praeusta and Pheidole trageri. P. astur is distinguished among them by the following combination of traits.

Major: a patch of rugoreticulum present laterad to each antennal fossa; longitudinal carinulae immediately next to the dorsal midline of head reaches the occipital border, but the occipital lobes are smooth and shiny; postpetiolar node seen from above elliptical in shape, with subangular lateral margins; small subpostpetiolar process present.

Minor: occiput narrowed to form a distinct neck, followed by a broad nuchal collar; pronotum entirely smooth and shiny.

MEASUREMENTS (mm) Holotype major: HW 2.34, HL 2.66, SL 1.20, EL 0.30, PW 1.10. Paratype minor: HW 0.68, HL 1.04, SL 1.42, EL 0.20, PW 0.50.

COLOR Major: body and mandibles reddish brown, legs and antennae a lighter shade of reddish brown.

Minor: concolorous yellow.

Pheidole astur Wilson 2003.jpg

Figure. Upper: holotype, major. Lower: paratype, minor. Scale bars = 1 mm.

Paratype Specimen Labels

Type Material

PERU: Cuzco Amazónico, 15 km northeast of Puerto Maldonado, Madre de Dios, col. Stefan Cover and John E. Tobin. Museum of Comparative Zoology

Etymology

L astur, hawk.

References