Generally constructs conical pebble mounds with basal entrances and peripherally cleared areas. Larger nest cones are indistinguishable from those of Pogonomyrmex occidentalis, and they occur in similar ecologic areas and at similar elevations. Nests can also be found that have a less pronounced gravel mound or a flat gravel disk. Workers of the this species seem to be equally antagonistic to intruders as P. occidentalis and sting with the same vigor.
- 1 Identification
- 2 Distribution
- 3 Biology
- 4 Castes
- 5 Nomenclature
- 6 References
Keys including this Species
United States – Washington, Oregon, Idaho, Montana, Nevada, extreme southern Utah, northwestern Wyoming and eastern California.
Distribution based on Regional Taxon Lists
Distribution based on AntMaps
Distribution based on AntWeb specimens
Check data from AntWeb
The following information is derived from Barry Bolton's New General Catalogue, a catalogue of the world's ants.
- salinus. Pogonomyrmex salinus Olsen, 1934: 510, pl. 5, fig. 3 (w.) U.S.A. Cole, 1968: 108 (q.m.); Wheeler, G.C. & Wheeler, J. 1972b: 237 (l.). Junior synonym of occidentalis: Smith, M.R. 1953g: 132. Revived from synonymy: Cole, 1968: 106. Senior synonym of owyheei: Shattuck, 1987: 173.
- owyheei. Pogonomyrmex occidentalis subsp. owyheei Cole, 1938a: 240 (w.q.) U.S.A. Cole, 1968: 102 (m.). Raised to species: Creighton, 1950a: 130. Junior synonym of salinus: Shattuck, 1987: 173.
Unless otherwise noted the text for the remainder of this section is reported from the publication that includes the original description.
Cole (1968) - HL 1.41-1.52 mm, HW 1.41-1.63 mm, CI 100.0-107.2, SL 1.18-1.37 mm, SI 83.5-84.0, EL 0.34-0.42 mm, EW 0.19-0.27 mm, OI 24.1-27.6, WL 1.60-1.90 mm, PNL 0.38-0.46 mm, PNW 0.34-0.46 mm, PPL 0.38-0.49 mm, PPW 0.49-0.57 mm.
Mandible as illustrated in Pl. III, Fig. 5; basal most tooth not offset from the straight basal mandibular margin. Base of antennal scape as shown in PI. IV, Fig. 3; superior lobe broadly and evenly convex, not bearing a peripheral carina. Cephalic interrugal punctures strong and dense, as in occidentalis and owyheei.
Contours of thorax, petiole, and post petiole, in lateral view, as in Pl. VI, Fig. 3; the thoracic dorsum broadly but distinctly convex between base of epinotal spine and the pronotum; epinotal spines short to long, directed strongly upward and somewhat backward; venter of petiolar peduncle generally without a process; apex of petiolar node strongly acute, nipple prominent; postpetiolar ventral process broad, strongly developed. Contours of petiole and postpetiole, in dorsal view, as shown in Pl. VIII, Fig. 3. Pronotal humeri densely and strongly punctate, the punctures often largely obscuring or replacing the rugae. Dorsum of petiolar and postpetiolar nodes generally with a prominent rugae which are usually transverse, wavy, subparallel, and closely spaced; the interspaces densely punctate. Base of dorsum of first gastric segment frequently densely and coarsely punctate and opaque, sometimes only very finely punctate or densely shagreened and subopaque or shining. Body color generally a very deep ferrugineous red.
Cole (1968) - HL 1.63-1.75 mm, HW 1.79-1.86 mm, CI 106.3-109.8, SL 1.33-1.41 mm, SI 74.3-75.8, EL 0.42-0.47 mm, EW 0.23-0.27 mm, OI 25.8-26.8, WL 2.32-2.67 mm, PNL 0.47-0.49 mm, PNW 0.49-0.53 mm, PPL 0.53-0.57 mm, PPW 0.80-0.87 mm.
Conformation of mandible and base of antennal scape as in the worker. Cephalic interrugal spaces sparsely, unevenly, and finely punctate; subopaque. Epinotum with a pair of prominent angles or short to medium spines. Sculpture of petiole, postpetiole, and gaster similar to that of worker; body color a little paler.
Cole (1968) - HL 1.14-1.44 mm, HW 1.18-1.56 mm, CI 103.5-108.3, SL 0.19-0.76 mm, SI 41.5-48.7, EL 0.46-0.57 mm, EW 0.27-0.34 mm, OI 32.6-38.9, WL 2.05-2.43 mm. PNL 0.42-0.46 mm, PNW 0.42-0.49 mill, PPL 0.46-0.57 mm, PPW 0.72-0.80 mm.
Similar to the male of owyheei. Mandible (Pl. VIII, Fig. I) with 4 or 5 teeth, the basalmost tooth not offset from the straight basal mandibular margin. Cephalic interrugal punctures sparse, the interspaces shining. Epinotal armature tuberculate to angulate. Ventral process of postpetiole weakly developed. Paramere as shown in Pl. X, Fig. 3 and Pl. XI, Fig. 3; apex convex. Body color generally a rather uniform, deep brownish black.
Type locality: Near Soda Springs, Bridgeport, California. Museum of Comparative Zoology
- Cole, A. C., Jr. 1968. Pogonomyrmex harvester ants. A study of the genus in North America. Knoxville, Tenn.: University of Tennessee Press, x + 222 pp. (page 108, queen, male described; page 106, revived from synonymy)
- Howell, B.D., Robertson, I.C. 2015. Reclaiming Lost Territory: the Response of Owyhee Harvester Ants to Forager Intrusions by Neighboring Colonies. Journal of Insect Behavior 28:722–731 (DOI: 10.1007/s10905-015-9538-9).
- Olsen, O. W. 1934. Notes on the North American harvesting ants of the genus Pogonomyrmex Mayr. Bull. Mus. Comp. Zool. 77: 493-514 (page 510, pl. 5, fig. 3 worker described)
- Shattuck, S. O. 1987. An analysis of geographic variation in the Pogonomyrmex occidentalis complex (Hymenoptera: Formicidae). Psyche (Camb.) 94: 159-179 (page 173, Senior synonym of owyheei)
- Smith, M. R. 1953g. Pogonomyrmex salinus Olsen, a synonym of Pogonomyrmex occidentalis (Cress.) (Hymenoptera: Formicidae). Bull. Brooklyn Entomol. Soc. 48: 131-132 (page 132, Junior synonym of occidentalis)
- Wheeler, G. C.; Wheeler, J. 1972b. Ant larvae of the subfamily Myrmicinae: second supplement on the tribes Myrmicini and Pheidolini. J. Ga. Entomol. Soc. 7: 233-246 (page 237, larva described)
- Wheeler, G. C. and J. Wheeler. 1986. The ants of Nevada. Natural History Museum of Los Angeles County, Los Angeles.