Pheidole trachyderma

AntWiki: The Ants --- Online
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

Pheidole trachyderma casent0904374 p 1 high.jpg

Pheidole trachyderma casent0904374 d 1 high.jpg

Specimen Labels

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

Distribution based on Regional Taxon Lists

Neotropical Region: Argentina (type locality).

Distribution based on AntMaps

AntMapLegend.png

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.
pChart

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.
pChart

Biology

Castes

Worker

Minor

Images from AntWeb

Pheidole trachyderma casent0904375 h 1 high.jpgPheidole trachyderma casent0904375 p 1 high.jpgPheidole trachyderma casent0904375 d 1 high.jpgPheidole trachyderma casent0904375 l 1 high.jpg
Paralectotype of Pheidole risii trachydermaWorker. 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.


Pheidole trachyderma Wilson 2003.jpg

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

Lectotype Specimen Labels

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