Pheidole dentigula

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Pheidole dentigula
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Myrmicinae
Tribe: Attini
Genus: Pheidole
Species: P. dentigula
Binomial name
Pheidole dentigula
Smith, M.R., 1927

Pheidole dentigula casent0104393 profile 1.jpg

Pheidole dentigula casent0104393 dorsal 1.jpg

Specimen Label

According to Marion R. Smith (1944d), dentigula occurs in forests, where it nests in the soil and in rotten stumps. Stefan Cover (personal communication) adds that P. dentigula is definitely a forest ant. In moist or mesic forest types it is common in soil and rotten wood. In xeric types, like longleaf pine-turkey oak sandhill forest, it is found in moisture-retentive microhabitats like large rotten stumps, or under deep litter in small depressions.” W. L. Brown and I found winged reproductives in a colony near Ravenel, South Carolina, on 9 June 1957. (Wilson 2003)

Identification

See the description in the nomenclature section.

Keys including this Species

Distribution

Tennessee and North Carolina south to the Florida Keys and west to eastern Texas, mostly on the coastal plain. (Wilson 2003)

Distribution based on Regional Taxon Lists

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

Distribution based on AntMaps

AntMapLegend.png

Distribution based on AntWeb specimens

Check data from AntWeb

Biology

Castes

Worker

Minor

Major

Queen

Nomenclature

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

  • dentigula. Pheidole dentigula Smith, M.R. 1927: 310 (s.w.) U.S.A. Smith, M.R. 1928b: 245 (q.); Wheeler, G.C. & Wheeler, J. 1960b: 12 (l.); Crozier, 1970: 117 (k.). See also: Wilson, 2003: 407.

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

Description

From Wilson (2003): Similar to Pheidole ceibana, Pheidole lignicola and Pheidole metallescens, differing as follows.

Major: frontal lobes and vertex carinulate; all of rest of dorsal head surface from eyes to occiput rugoreticulate; occipital cleft deep, its nadir angulate; inner teeth of hypostoma unusually prominent (projecting well forward of anterior head margin in side view); propodeal spines large, robust, equilaterally triangular; postpetiole from above very broad, elliptical.

Minor: space between eye and antennal fossa on each side rugulose, and most of rest of head, including occiput, carinulate; the carinulae are quite variably developed, and often weak even though still present (the figure represents one extreme); all of head and mesosoma except for midclypeus foveolate; anterior and lateral margins of pronotal dorsum rugulose; propodeal spines large, thick at base.

MEASUREMENTS (mm) Paratype major: HW 0.84, HL 0.94, SL 0.40, EL 0.10, PW 0.44. Paratype minor: HW 0.46, HL 0.52, SL 0.42, EL 0.06, PW 0.30.

COLOR Major: body and mandibles concolorous reddish brown; appendages dark yellow.

Minor: head, mandibles, and mesosoma light reddish brown; waist, gaster, and other appendages dark yellow.


Pheidole dentigula Wilson 2003.jpg

Figure. Upper: paratype, major. Lower: paratype, minor. Scale bars = 1 mm.

Type Material

MISSISSIPPI: State University, near Starkville, Oktibbeha Co., col. M. R. Smith (Wilson 2003). National Museum of Natural History and Museum of Comparative Zoology - as reported in Wilson (2003)

Etymology

L dentigula, toothed throat (gula), referring to the strong teeth of the hypostoma in the type majors. (Wilson 2003)

References

  • Crozier, R. H. 1970a. Karyotypes of twenty-one ant species (Hymenoptera: Formicidae), with reviews of the known ant karyotypes. Can. J. Genet. Cytol. 12: 109-128 (page 117, karyotype described)
  • Smith, M. R. 1927b. An additional annotated list of ants of Mississippi, with a description of a new species of Pheidole (Hym.: Formicidae). Entomol. News 38: 308-314 (page 310, soldier, worker described)
  • Smith, M. R. 1928b. An additional annotated list of the ants of Mississippi. With a description of a new species of Aphaenogaster (Hym.: Formicidae). Entomol. News 39: 242-246 (page 245, queen described)
  • Smith, M. R. 1944. Additional ants recorded from Florida, with descriptions of two new subspecies. Fla. Entomol. 27: 14–17.
  • Wheeler, G. C.; Wheeler, J. 1960b. Supplementary studies on the larvae of the Myrmicinae (Hymenoptera: Formicidae). Proc. Entomol. Soc. Wash. 62: 1-32 (page 12, larva described)
  • Wilson, E. O. 2003. Pheidole in the New World: A dominant, hyperdiverse ant genus. Harvard University Press, Cambridge, MA. (page 407, fig. major, minor described)