Wheeler, W.M., 1908
According to Stefan Cover (personal communication), diversipilosa is common at mid-elevations (1050–1900 m), favoring oak-pine-juniper forests, especially those in creek valleys, where it nests under rocks and in open soil. Colonies have single queens and large populations, which can exceed 1000 workers. Seed caches have been found in some nests. (Wilson 2003)
- 1 Identification
- 2 Distribution
- 3 Biology
- 4 Castes
- 5 Nomenclature
- 6 References
The majors of this species are easily recognized by the short (less than 0.05 mm), erect hairs on the dorsum of the gaster. The scape of the major is flattened near the base, but the width is less than the width of the scape near the apex. The scape extends slightly more than ½ the distance to the posterior lateral corner. The anterior half of the head has coarse, reticulated rugae, the posterior half of the head, and the tops of the posterior lateral lobes, are smooth and glossy. The posterior half of the mesonotum is enlarged and swollen, the propodeal spines are well developed, but thick. The lateral connules on the postpetiole are absent. The minor worker has most surfaces punctate, with shining areas in the middle of the head, dorsum and side of the pronotum, and the gaster. (Mackay and Mackay 2002)
Also see the description in the nomenclature section.
Keys including this Species
Southwestern Texas to the mountains of southern and central Arizona. (Wilson 2003)
Distribution based on Regional Taxon Lists
Distribution based on AntMaps
Distribution based on AntWeb specimens
Check data from AntWeb
Oak forests, alligator juniper, Chihuahua pine forests. (Mackay and Mackay 2002)
Brood is found in nests in April, sex-uals in June. Nests appear to be mo-nogynous, even though the nests are very large. Foragers are attracted to tuna baits. (Mackay and Mackay 2002)
The following information is derived from Barry Bolton's New General Catalogue, a catalogue of the world's ants.
- diversipilosa. Pheidole crassicornis var. diversipilosa Wheeler, W.M. 1908e: 467 (s.w.q.) U.S.A. Junior synonym of crassicornis: Creighton, 1950a: 175; Gregg, 1959: 20. Revived from synonymy and raised to species: Naves, 1985: 61. See also: Wilson, 2003: 153.
Unless otherwise noted the text for the remainder of this section is reported from the publication that includes the original description.
From Wilson (2003): Very close to Pheidole crassicornis from which it differs in the major by abundant pilosity on the mesosoma and gaster, and Pheidole tetra, from which it differs in the major by the much shorter pilosity on the first gastral tergite and by sparseness or absence of pilosity on the waist and occiput.
MEASUREMENTS (mm) Lectotype major: HW 1.26, HL 1.34, SL 0.66, EL 0.20, PW 0.66. Paralectotype minor: HW 0.66, HL 0.74, SL 0.76, EL 0.16, PW 0.46.
COLOR Major and minor: body medium reddish brown, appendages light reddish brown.
Figure. Upper: lectotype, major. Lower: paralectotype, minor. Scale bars = 1 mm.
TEXAS: Ft. Davis, southwestern Texas, col. W. M. Wheeler., Museum of Comparative Zoology - as reported in Wilson (2003)
L diversipilosa, different (variable) hair, alluding to the major. (Wilson 2003)
- Creighton, W. S. 1950a. The ants of North America. Bull. Mus. Comp. Zool. 104: 1-585 (page 175, Junior synonym of crassicornis)
- Gregg, R. E. 1959 . Key to the species of Pheidole (Hymenoptera: Formicidae) in the United States. J. N. Y. Entomol. Soc. 66: 7-48 (page 20, Junior synonym of crassicornis)
- Mackay, W. P. and E. Mackay. 2002. The ants of New Mexico (Hymenoptera: Formicidae). Edwin Mellen Press, Lewiston, NY.
- Naves, M. A. 1985. A monograph of the genus Pheidole in Florida, USA (Hymenoptera: Formicidae). Insecta Mundi 1: 53-90 (page 61, Revived from synonymy, and raised to species)
- Wheeler, W. M. 1908h. The ants of Texas, New Mexico and Arizona. (Part I.). Bull. Am. Mus. Nat. Hist. 24: 399-485 (page 467, soldier, worker, queen described)
- Wilson, E. O. 2003. Pheidole in the New World: A dominant, hyperdiverse ant genus. Harvard University Press, Cambridge, MA. (page 153, fig. see also)