Pogonomyrmex tenuispinus

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Pogonomyrmex tenuispinus
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Myrmicinae
Tribe: Pogonomyrmecini
Genus: Pogonomyrmex
Species group: barbatus
Species: P. tenuispinus
Binomial name
Pogonomyrmex tenuispinus
Forel, 1914

Pogonomyrmex tenuispinus casent0005709 profile 1.jpg Pogonomyrmex tenuispinus casent0005709 dorsal 1.jpg Specimen Label


Rarely collected and poorly known.


Keys including this Species


Mexico: Cape Region and offshore islands, Baja California.

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



Only known from the worker caste.


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

  • tenuispinus. Pogonomyrmex desertorum var. tenuispina Forel, 1914d: 269 (w.) U.S.A. Subspecies of desertorum: Creighton, 1950a: 125. Raised to species and senior synonym of dentatus: Cole, 1968: 77.
  • dentatus. Pogonomyrmex dentatus Olsen, 1934: 505 (w.) MEXICO. Junior synonym of tenuispinus: Cole, 1968: 77.

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



Cole (1968) - HL 1.94-2.09 mm, HW 2.13-2.17 mm, CI 103.6-109.8, SL 1.37-1.44 mm, SI 64.3-66.7, EL 0.38-0.42 mm, EW 0.27-0.30 mm, OI 19.6-20.0, WL 2.13-2.28 mm, PNL 0.44-0.47 mm, PNW 0.42-0.46 mm, PPL 0.49-0.53 mm, PPW 0.65-0.68 mm.

Mandible as illustrated in Pl. III, Fig. 18; similar to that of Pogonomyrmex bicolor; penultimate and ultimate basal teeth widely separated. Base of antennal scape as in Pl. IV, Fig. 14; superior lobe strongly developed; basal flange not extending beyond apex of superior lobe; lip well developed, bipartite.

Lateral lobes of clypeus with a prominent, blunt, tooth-like projection in front of each antennal fossa. Frontal area smooth and shining, without a prominent median carina. Cephalic rugulae closely spaced, very delicate. Posterior corners of head smooth, at least somewhat shining. Contour of thorax, petiole, and postpetiole, in lateral view, as shown in Pl. V, Fig. 6. Epinotal spines long, very slender, of nearly the same diameter throughout. Contour of petiole and post petiole, in dorsal view, as illustrated in Pl. VII, Fig. 23. Venter of petiolar peduncle without a process. Postpetiole with a prominent ventral process. Pronotal pleura densely punctate, without rugae. Head, thorax, petiole, and postpetiole light to medium ferrugineous red; gaster darker.

Type Material

Cole (1968) - Type locality: Unknown; probably Miraflores and Sierra San Lazaro, Cape Region, Baja California, Mexico.


  • 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 77, raised to species, and senior synonym of dentatus)
  • Creighton, W. S. 1950a. The ants of North America. Bull. Mus. Comp. Zool. 104: 1-585 (page 125, Subspecies of desertorum)
  • Forel, A. 1914d. Formicides d'Afrique et d'Amérique nouveaux ou peu connus. Bull. Soc. Vaudoise Sci. Nat. 50: 211-288 (page 269, worker described)