Formica occulta

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Formica occulta
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Formicinae
Tribe: Formicini
Genus: Formica
Species: F. occulta
Binomial name
Formica occulta
Francoeur, 1973

Formica occulta casent0102798 profile 1.jpg

Formica occulta casent0102798 dorsal 1.jpg

Specimen labels

Nests are usually found under stones, but may be located under logs, or simply in the soil, in fine sand, loam soils, to rocky loam. All nests had only a single gyne. They are very fast, and rescue brood when the nest is disturbed. Workers from larger nests are moderately aggressive. Black or nearly black, with abundant appressed pilosity. The pilose lobes on the metasternum are always developed and surrounded with abundant, erect hairs. (Mackay and Mackay 2002)

At a Glance • Polygynous  
 

Identification

Black or nearly black, with abundant appressed pilosity. The pilose lobes on the metasternum are always developed and surrounded with abundant, erect hairs. (Mackay and Mackay 2002)

Keys including this Species

Distribution

United States: Oregan, Wyoming, Utah, Colorada, Arizona and New Mexico. Mexico, Chihuahua.

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) - Pinyon-juniper, sagebrush communities, oak forests, ponderosa pine-riparian; aspen, fir, spruce, and residential areas.

Biology

For New Mexico (Mackay and Mackay 2002) - Brood was found in nests from June to August, sexuals in late June to July. Dealate females were collected in late June and early July. A mating flight occurred the night of 12-vii-1986, sexuals were attracted to a blacklight trap. Dealate females were found in August, two new females were found nesting together (two separate times, one with brood present). One colony was nesting together with Lasius sitiens, a second nest was together with Myrmica hamulata, another with Formica lasioides, a fourth with Solenopsis salina. One nest also contained Acanthomyops latipes(=Lasius latipes), Lasius sitiens and Myrmica hamulata. It is a host of the cricket Myrmecophila sp., and is parasitized by Polyergus breviceps.

Castes

Nomenclature

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

  • occulta. Formica occulta Francoeur, 1973: 94, figs. 132-147 (w.q.m.) U.S.A.

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

Description

Francoeur 1973. Figures 132-147.


References

  • Francoeur, A. 1973. Révision taxonomique des espèces néarctiques du groupe fusca, genre Formica (Formicidae, Hymenoptera). Mém. Soc. Entomol. Qué. 3: 1-316 (page 94, figs. 132-147 worker, queen, male described)
  • Mackay, W. P. and E. Mackay. 2002. The ants of New Mexico (Hymenoptera: Formicidae). Edwin Mellen Press, Lewiston, NY.