Formica wheeleri Creighton

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Formica wheeleri
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Formicinae
Tribe: Formicini
Genus: Formica
Species: F. wheeleri
Binomial name
Formica wheeleri
Creighton, 1935

Formica wheeleri casent0102800 profile 1.jpg

Formica wheeleri casent0102800 dorsal 1.jpg

Specimen labels

This species usually nests under stones, but may construct earthen mounds or even thatched domes in rocky loam soils. Reproductives were found in nests in July, dealate females also in July. The males are apparently very large (Cole, 1955c). This species enslaves Formica altipetens, Formica bradleyi, Formica fusca, Formica lasioides, Formica lepida, Formica neogagates, and Formica neorufibarbis. (Mackay and Mackay 2002)

At a Glance • Slave-maker  

 

Identification

The petiole of this species has a blunt apex and is wide as seen from the front. The head is often darker than the mesosoma. The underside of the head usually has a pair of erect hairs. The hairs on the gaster are about 0.1 mm long, and are moderately fine, mostly sharp-tipped. Those on the pronotum are shorter, thicker and at least a few are blunt-tipped. The eyes are large, extending past the sides of the head in most workers. (Mackay and Mackay 2002)

Distribution

United States: Idaho and Montana to North Dakota, south to Nevada, New Mexico and Arizona.

Distribution based on Regional Taxon Lists

Nearctic Region: United States (type locality).
Neotropical Region: Mexico.

Distribution based on AntMaps

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Distribution based on AntWeb specimens

Check data from AntWeb

Habitat

In New Mexico (Mackay and Mackay 2002) - Sagebrush scrub, grasslands up to ponderosa pine and aspen-spruce forests.

Biology

This species is a member of a group of Formica species that were formerly placed in the subgenus Raptiformica. All species are facultative slavemakers, i.e., species which usually or often have slaves but can get along without them. The colony-founding female forces her way into a small colony of another species of Formica, somehow gets rid of its queen and workers and appropriates its nest and brood. The workers emerging from this brood accept the intruding queen as their own. The enslaved species belong to the Formica neogagates, fusca, and pallidefulva species groups. When the workers of the slave-making species have become numerous enough, they start raiding for more slaves.

Nevada, Wheeler and Wheeler (1986) We have 2 records from the same locality in the Cool Desert: Washoe Co.: 11 mi. S Reno, 5,500 ft. One nest was under a stone; the other was exposed and surmounted by a low crater of fine soil 37 cm in diameter. The workers were fast and aggressive.

Castes

Worker


Queen

Male

Nomenclature

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

  • wheeleri. Formica wheeleri Creighton, 1935: 1, fig. 1 (w.q.) U.S.A. Combination in F. (Raptiformica): Creighton, 1950a: 472.

Description

References