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Pheidole stigma
| Pheidole stigma | |
|---|---|
| |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Insecta |
| Order: | Hymenoptera |
| Family: | Formicidae |
| Subfamily: | Myrmicinae |
| Tribe: | Attini |
| Genus: | Pheidole |
| Species: | P. stigma |
| Binomial name | |
| Pheidole stigma Wilson, 2003
| |
The type colony was found beneath a rock in a pasture. (Wilson 2003)
Identification
See the description in the nomenclature section.
Keys including this Species
Distribution
Only known from the type locality.
Latitudinal Distribution Pattern
Latitudinal Range: -1.77° to -29.7°.
| North Temperate |
North Subtropical |
Tropical | South Subtropical |
South Temperate |
- Source: AntMaps
Distribution based on Regional Taxon Lists
Neotropical Region: Ecuador (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
Images from AntWeb
   
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| Paratype Pheidole stigma. Worker (major/soldier). Specimen code jtlc000016538. Photographer Brianna Bartholomew, uploaded by University of Utah. | Owned by MCZC. |
Nomenclature
The following information is derived from Barry Bolton's Online Catalogue of the Ants of the World.
- stigma. Pheidole stigma Wilson, 2003: 234, figs. (s.w.) ECUADOR.
Unless otherwise noted the text for the remainder of this section is reported from the publication that includes the original description.
Description
Distinguished within the diligens group by the following combination of traits.
Major: pilosity very sparse, generally, and entirely absent on the mesosoma and waist; head light reddish brown with medium brown spot on vertex and medium brown trim on margins of frontal lobes, as illustrated; carinulae limited to anterior half of head, including margins of frontal lobe, and posterior half of dorsal surface of head and all of gaster smooth and shiny; all of mesosoma and waist foveolate and opaque.
Minor: mesosoma devoid of hair; carinulae limited to circular carinulae around antennal fossae; all of mesosoma and petiole, as well as anterior half of head and side of postpetiole, foveolate and opaque, and the rest of the body smooth and shiny; body medium reddish brown, appendages light reddish brown, tarsi yellow.
Compare with Pheidole anima, Pheidole bruesi, Pheidole diligens, Pheidole gagates, Pheidole geraesensis, Pheidole nubila, Pheidole piceonigra, Pheidole radoszkowskii and Pheidole triconstricta.
MEASUREMENTS (mm) Holotype major: HW 0.60, HL 0.64, SL 0.76, EL 0.14, PW 0.40. Paratype minor: HW 1.00, HL 1.00, SL 0.80, EL 0.18, PW 0.52.
COLOR See in Diagnosis above.
Figure. Upper: holotype, major. Lower: paratype, minor. Scale bars = 1 mm.
Type Material
ECUADOR: Baños, near Riobamba, 1800 m, col. Gary J. Umphrey. Museum of Comparative Zoology
Etymology
Gr stigma, mark, spot, with reference to the dark spot on the head of the major.
References
- Wilson, E. O. 2003. Pheidole in the New World: A dominant, hyperdiverse ant genus. Harvard University Press, Cambridge, MA. (page 234, fig. major, minor described)
- Albuquerque, E., Prado, L., Andrade-Silva, J., Siqueira, E., Sampaio, K., Alves, D., Brandão, C., Andrade, P., Feitosa, R., Koch, E., Delabie, J., Fernandes, I., Baccaro, F., Souza, J., Almeida, R., Silva, R. 2021. Ants of the State of Pará, Brazil: a historical and comprehensive dataset of a key biodiversity hotspot in the Amazon Basin. Zootaxa 5001, 1–83 (doi:10.11646/zootaxa.5001.1.1).
- Lubertazzi, D. 2019. The ants of Hispaniola. Bulletin of the Museum of Comparative Zoology, 162(2), 59-210 (doi:10.3099/mcz-43.1).
References based on Global Ant Biodiversity Informatics
- Boscardin, E. Correa Costa, J. Garlet, A. Bolson Murari, and J. H. C. Delabie. 2011, Comparative evaluation of attractive baits through ant species richness (Hymenoptera: Formicidae) in a Eucalyptus grandis plantation in Santa Maria, Rio Grande do Sul, Brazil. AUGMdomus 3: 10-19.
- Fernández, F. and S. Sendoya. 2004. Lista de las hormigas neotropicales. Biota Colombiana Volume 5, Number 1.