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Pheidole trachyderma
| Pheidole trachyderma | |
|---|---|
| |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Insecta |
| Order: | Hymenoptera |
| Family: | Formicidae |
| Subfamily: | Myrmicinae |
| Tribe: | Attini |
| Genus: | Pheidole |
| Species: | P. trachyderma |
| Binomial name | |
| Pheidole trachyderma Emery, 1906
| |
Nothing is known about the biology of trachyderma.
Identification
See the description in the nomenclature section.
Keys including this Species
Distribution
Only known from the type locality.
Latitudinal Distribution Pattern
Latitudinal Range: -26.629° to -26.629°.
| 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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| Paralectotype of Pheidole risii trachyderma. Worker. Specimen code casent0904375. Photographer Z. Lieberman, uploaded by California Academy of Sciences. | Owned by MSNG, Genoa, Italy. |
Nomenclature
The following information is derived from Barry Bolton's Online Catalogue of the Ants of the World.
- trachyderma. Pheidole risi subsp. trachyderma Emery, 1906c: 148 (s.w.q.) ARGENTINA. [Misspelled as pachyderma by Santschi, 1912e: 529.] Raised to species: Wilson, 2003: 765.
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): DIAGNOSIS Similar in various traits to Pheidole aper, Pheidole bambusarum, Pheidole brevicona, Pheidole dyctiota, Pheidole laeviventris, Pheidole lutzi, Pheidole rugatula, Pheidole senilis, Pheidole sigillata and Pheidole traini, distinguished as follows.
Major: reddish yellow; all of dorsal surface of head (including frontal lobes) rugoreticulate, except for occiput, antennal fossae, frontal triangle, and clypeus; margins of pronotal dorsum rugulose and humeri rugoreticulate, but rest of promesonotal dorsum almost exclusively foveolate; in side view promesonotum descends to metanotal groove in a near-vertical face; postpetiole from above cone-shaped.
Minor: all of head, mesosoma, and petiole foveolate and opaque, carinulae confined to anterior dorsal surface of head, and rugoreticula wholly lacking; occiput broad, lacking nuchal collar.
MEASUREMENTS (mm) Lectotype major: HW 1.18, HL 1.18, SL 0.64, EL 0.14, PW 0.66. Paralectotype minor: HW 0.58, HL 0.62, SL 0.58, EL 0.10, PW 0.40.
COLOR Major: concolorous medium reddish yellow.
Minor: concolorous light reddish yellow.
Figure. Upper: lectotype, major. Lower: paralectotype, minor. Scale bars = 1 mm.
Type Material
ARGENTINA: San Pedro, Misiones. Museo Civico di Storia Naturale, Genoa - as reported in Wilson (2003)
Etymology
Gr trachyderma, rough skin, alluding to rugoreticulate sculpturing. (Wilson 2003)
References
- Emery, C. 1906c [1905]. Studi sulle formiche della fauna neotropica. XXVI. Bull. Soc. Entomol. Ital. 37: 107-194 (page 148, soldier, worker, queen described)
- Wilson, E. O. 2003. Pheidole in the New World: A dominant, hyperdiverse ant genus. Harvard University Press, Cambridge, MA. (page 765, fig. major, minor described, Raised to species: new status)
References based on Global Ant Biodiversity Informatics
- Bruch C. 1914. Catálogo sistemático de los formícidos argentinos. Revista del Museo de La Plata 19: 211-234.
- 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.
- Emery C. 1906. Studi sulle formiche della fauna neotropica. XXVI. Bullettino della Società Entomologica Italiana 37: 107-194.
- Kempf, W.W. 1972. Catalago abreviado das formigas da regiao Neotropical (Hym. Formicidae) Studia Entomologica 15(1-4).
- Santschi F. 1933. Fourmis de la République Argentine en particulier du territoire de Misiones. Anales de la Sociedad Cientifica Argentina. 116: 105-124.
- Vittar, F. 2008. Hormigas (Hymenoptera: Formicidae) de la Mesopotamia Argentina. INSUGEO Miscelania 17(2):447-466