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Pheidole obscurifrons
| Pheidole obscurifrons | |
|---|---|
| |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Insecta |
| Order: | Hymenoptera |
| Family: | Formicidae |
| Subfamily: | Myrmicinae |
| Tribe: | Attini |
| Genus: | Pheidole |
| Species: | P. obscurifrons |
| Binomial name | |
| Pheidole obscurifrons Santschi, 1925
| |
Nothing is known about the biology of obscurifrons.
Identification
See the description in the nomenclature section.
Keys including this Species
Distribution
Recorded from Santa Fé and Córdoba, Argentina (Kempf 1972b).
Latitudinal Distribution Pattern
Latitudinal Range: -28.4° to -31.632389°.
| North Temperate |
North Subtropical |
Tropical | South Subtropical |
South Temperate |
- Source: AntMaps
Distribution based on Regional Taxon Lists
Neotropical Region: Argentina (type locality).
Distribution based on AntMaps
Distribution based on AntWeb specimens
Check data from AntWeb
Countries Occupied
| Number of countries occupied by this species based on AntWiki Regional Taxon Lists. In general, fewer countries occupied indicates a narrower range, while more countries indicates a more widespread species. |
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Estimated Abundance
| Relative abundance based on number of AntMaps records per species (this species within the purple bar). Fewer records (to the left) indicates a less abundant/encountered species while more records (to the right) indicates more abundant/encountered species. |
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Biology
Castes
Worker
Minor
Images from AntWeb
   
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| Syntype of Pheidole obscurifrons. Worker. Specimen code casent0913255. Photographer Z. Lieberman, uploaded by California Academy of Sciences. | Owned by NHMB, Basel, Switzerland. |
Nomenclature
The following information is derived from Barry Bolton's Online Catalogue of the Ants of the World.
- obscurifrons. Pheidole (Elasmopheidole) aberrans var. obscurifrons Santschi, 1925e: 158 (s.w.) ARGENTINA. Raised to species: Wilson, 2003: 139.
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): Major: large; yellow; frontal lobes in side view form blunt right angles; in full-face view the mesad anterior border is straight and the lateral anterior border concave, the two coming together as a blunt angle that approaches within an Eye Length of the anterior clypeal border; all of the dorsal surface of the head carinulate except the centers of the clypeus and occiput; upper section of mesopleuron carinulate and foveolate; low, forward-directed process present on postpetiolar venter.
Minor: all of dorsum and sides of head except vertex and frontal triangle carinulate; pronotal dorsum covered by semicircular carinulae; mesopleuron foveolate.
MEASUREMENTS (mm) Lectotype major: HW 1.70, HL 2.00, SL 0.62, EL 0.16, PW 0.90. Paralectotype minor: HW 0.76, HL 0.82, SL 0.62, EL 0.10, PW 0.50.
COLOR Major: concolorous reddish brown.
Minor: concolorous plain yellow.
Figure. Upper: lectotype, major. Lower: paralectotype, minor. Scale bars = 1 mm.
Type Material
ARGENTINA: Fives Lille, Santa Fé. Naturhistorisches Museum, Basel - as reported in Wilson (2003)
Etymology
L obscurifrons, dark or indistinct brown, allusion unknown. (Wilson 2003)
References
- Santschi, F. 1925e. Fourmis des provinces argentines de Santa Fe, Catamarca, Santa Cruz, Córdoba et Los Andes. Comun. Mus. Nac. Hist. Nat. "Bernardino Rivadavia" 2: 149-168 (page 158, soldier, worker described)
- Wilson, E. O. 2003. Pheidole in the New World: A dominant, hyperdiverse ant genus. Harvard University Press, Cambridge, MA. (page 139, fig. major, minor described. Raised to species)
References based on Global Ant Biodiversity Informatics
- Cuezzo, F. 1998. Formicidae. Chapter 42 in Morrone J.J., and S. Coscaron (dirs) Biodiversidad de artropodos argentinos: una perspectiva biotaxonomica Ediciones Sur, La Plata. Pages 452-462.
- Gallardo A. 1932. El subgénero Elasmopheidole en la República Argentina (Himenopteros Formicidos). Revista Chilena de Historia Natural 36: 178-182.
- Kempf, W.W. 1972. Catalago abreviado das formigas da regiao Neotropical (Hym. Formicidae) Studia Entomologica 15(1-4).
- Santschi F. 1925. Fourmis des provinces argentines de Santa Fe, Catamarca, Santa Cruz, Córdoba et Los Andes. Comunicaciones del Museo Nacional de Historia Natural "Bernardino Rivadavia" 2: 149-168.
- Vittar, F. 2008. Hormigas (Hymenoptera: Formicidae) de la Mesopotamia Argentina. INSUGEO Miscelania 17(2):447-466
- Vittar, F., and F. Cuezzo. "Hormigas (Hymenoptera: Formicidae) de la provincia de Santa Fe, Argentina." Revista de la Sociedad Entomológica Argentina (versión On-line ISSN 1851-7471) 67, no. 1-2 (2008).