Pheidole allarmata

AntWiki - Where Ant Biologists Share Their Knowledge
Jump to navigation Jump to search
Pheidole allarmata
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Myrmicinae
Tribe: Attini
Genus: Pheidole
Species: P. allarmata
Binomial name
Pheidole allarmata
Wilson, 2003

Pheidole allarmata casent0282797 p 1 high.jpg

Pheidole allarmata casent0282797 d 1 high.jpg

Specimen Labels

Two colonies collected by Stefan Cover and John E. Tobin at Cuzco Amazonica, 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. (Wilson 2003)

Identification

See the description in the nomenclature section.

Keys including this Species

Distribution

An Amazonian species recorded from scattered localities in Brazil, Colombia, Ecuador, Peru, and Suriname. (Wilson 2003)

Distribution based on Regional Taxon Lists

Neotropical Region: Brazil (type locality), Colombia, Ecuador, Peru, Suriname.

Distribution based on AntMaps

AntMapLegend.png

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.

  • allarmata. Pheidole allarmata Wilson, 2003: 649, figs. (s.w.) BRAZIL.

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

Description

DIAGNOSIS Similar to Pheidole hasticeps, Pheidole subarmata, Pheidole synarmata and Pheidole triplex (see also the somewhat less similar Pheidole rhytifera), differing from these and other Pheidole 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.

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.


Pheidole allarmata Wilson 2003.jpg

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

Type Material

BRAZIL: Pirelli Plantation (Iriboca), near Belem, Para, col. P. F. Darlington. Museum of Comparative Zoology

Etymology

Gr, L allarmata, the "other one" bearing arms, referring to the species' similarity to subarmata and synarmata.

References