Formica xerophila

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Formica xerophila
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Formicinae
Tribe: Formicini
Genus: Formica
Species: F. xerophila
Binomial name
Formica xerophila
Smith, M.R., 1939

Formica xerophila casent0005379 profile 1.jpg

Formica xerophila casent0005379 dorsal 1.jpg

Specimen labels


Nests are found in the soil.


This species can be easily recognized by the thick petiole with a blunt apex, as seen in profile. Additionally it is pale brown with a slightly darker gaster. The propodeum is low, about the same level as the lowest point (posterior edge) of the mesonotum. The region between the two faces is broadly rounded. The metasternal process is poorly developed; there are few erect hairs, which are restricted to the clypeus, dorsum of the head and dorsum of the gaster. (Mackay and Mackay 2002)

Keys including this Species


United States: Washington, California, Nevada, Utah, Arizona and New Mexico.

Distribution based on Regional Taxon Lists

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

Distribution based on AntMaps


Distribution based on AntWeb specimens

Check data from AntWeb


In New Mexico (Mackay and Mackay 2002) - This species occurs in habitats that include a variety of arid, semi-arid and pine forest types.


Nevada, Wheeler and Wheeler (1986) - This species has been found only in the southern and western parts of the state. We have 29 records from 20 localities; 4,200 ft.-6,500 ft. One record is from a Sarcobatus Subclimax in the Hot Desert, 3 from the Cool Desert (2 from disturbed habitats), while the majority (19) are from the Pinyon-Juniper Biome. Five nests were under stones, 1 under dead wood; of the exposed nests 5 were surmounted by messy piles of excavated soil and 7 by craters 7-22 cm in diameter with entrances 15-20 mm in diameter.




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

  • xerophila. Formica (Neoformica) moki subsp. xerophila Smith, M.R. 1939f: 583 (w.) U.S.A. Raised to species and senior synonym of grundmanni: Francoeur, 1973: 259.
  • grundmanni. Formica moki subsp. grundmanni Cole, 1943b: 184 (w.) U.S.A. Junior synonym of xerophila: Francoeur, 1973: 259.

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


Francoeur 1973. Figures 455-458.