Formica mucescens

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Formica mucescens
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Formicinae
Tribe: Formicini
Genus: Formica
Species group: rufa
Species: F. mucescens
Binomial name
Formica mucescens
Wheeler, W.M., 1913

Formica mucescens casent0103491 profile 1.jpg

Formica mucescens casent0103491 dorsal 1.jpg

Specimen labels


This species can be recognized as there are few hairs on the tibiae, where they are restricted to two rows on the flexor surface. The gaster is covered with short, bristly hairs, in which the distance between the tips is less than the lengths of the hairs. (Mackay and Mackay 2002)

Keys including this Species


United States. Utah and Colorado.

Distribution based on Regional Taxon Lists

Nearctic Region: United States (type locality).

Distribution based on AntMaps


Distribution based on AntWeb specimens

Check data from AntWeb


Found in open prairies up to ponderosa pine forests. (Mackay and Mackay 2002)


Nest site selected in areas of moderate to sparse cover. Nest begun under log or stone with many of the passages running into the soil. Moderate use made of thatching, often little of this visible on the outside of the nest. Large domes or heaps of thatching rarely produced (Creighton, 1940).





The following information is derived from Barry Bolton's Online Catalogue of the Ants of the World.

  • mucescens. Formica truncicola subsp. mucescens Wheeler, W.M. 1913f: 442 (w.q.m.) U.S.A. Subspecies of rufa: Creighton, 1940a: 3. Raised to species: Creighton, 1950a: 491.



References based on Global Ant Biodiversity Informatics

  • Allred D. M. 1982. Ants of Utah. The Great Basin Naturalist 42: 415-511.
  • Allred, D.M. 1982. The ants of Utah. Great Basin Naturalist 42:415-511.
  • Bestelmeyer B. T., and J. A. Wiens. 2001. Local and regional-scale responses of ant diversity to a semiarid biome transition. Ecography 24: 381-392.
  • Gregg, R.T. 1963. The Ants of Colorado.