Pheidole rochai

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Pheidole rochai
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Myrmicinae
Tribe: Attini
Genus: Pheidole
Species: P. rochai
Binomial name
Pheidole rochai
Forel, 1912

Pheidole rochai casent0904392 p 1 high.jpg

Pheidole rochai casent0904392 d 1 high.jpg

Specimen Labels

Nothing is known about the biology of P. rochai.


See the description in the nomenclature section.

Keys including this Species


Known with certainty only from the Ceará type series. I have not seen the series described by Santschi (1923d: 46) as “var. deflexa” from Paraguay. (Wilson 2003)

Latitudinal Distribution Pattern

Latitudinal Range: -12.66027778° to -26.808285°.

Tropical South

Distribution based on Regional Taxon Lists

Neotropical Region: Brazil (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.

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.





Images from AntWeb

Pheidole rochai casent0904393 h 1 high.jpgPheidole rochai casent0904393 p 1 high.jpgPheidole rochai casent0904393 d 1 high.jpgPheidole rochai casent0904393 l 1 high.jpg
Syntype of Pheidole lemur rochaiWorker. Specimen code casent0904393. Photographer Z. Lieberman, uploaded by California Academy of Sciences. Owned by MSNG, Genoa, Italy.
Pheidole rochai casent0908225 h 1 high.jpgPheidole rochai casent0908225 h 2 high.jpgPheidole rochai casent0908225 p 1 high.jpgPheidole rochai casent0908225 d 1 high.jpgPheidole rochai casent0908225 l 1 high.jpg
Paralectotype of Pheidole rochaiWorker. Specimen code casent0908225. Photographer Will Ericson, uploaded by California Academy of Sciences. Owned by MHNG, Geneva, Switzerland.


Images from AntWeb

Pheidole rochai casent0908224 h 1 high.jpgPheidole rochai casent0908224 p 1 high.jpgPheidole rochai casent0908224 d 1 high.jpgPheidole rochai casent0908224 l 1 high.jpg
Lectotype of Pheidole rochaiWorker (major/soldier). Specimen code casent0908224. Photographer Will Ericson, uploaded by California Academy of Sciences. Owned by MHNG, Geneva, Switzerland.


The following information is derived from Barry Bolton's Online Catalogue of the Ants of the World.

  • rochai. Pheidole lemur r. rochai Forel, 1912f: 226 (s.w.) BRAZIL. [Pheidole rochai Forel, 1908e: 65. Nomen nudum.] Raised to species: Wilson, 2003: 225.

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


From Wilson (2003): A small yellow member of the diligens group whose major has a moderately prominent mesonotal convexity as part of a bilobous promesonotal outline seen in dorsal-oblique view; short, equilaterally triangular propodeal spine; overall mostly smooth and shiny body with sculpturing on the head confined to the eye level and anterior to it, and composed exclusively of longitudinal carinulae; and abundant medium-length, erect pilosity.

Close to Pheidole blumenauensis, Pheidole longiscapa, Pheidole perryorum, Pheidole tanyscapa and Pheidole vafra, but differing variously in head shape, eye size, sculpturing, and color. See also the less similar Pheidole lemur, Pheidole pubiventris, Pheidole seeldrayersi and Pheidole variegata (= Pheidole pubiventris), as illustrated.

MEASUREMENTS (mm) Lectotype major: HW 0.92, HL 0.96, SL 0.76, EL 0.14, PW 0.56. Paralectotype minor: HW 0.50, HL 0.60, SL 0.74, EL 0.12, PW 0.34.

COLOR Major and minor: concolorous yellow.

Pheidole rochai Wilson 2003.jpg

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

Lectotype Specimen Labels

Type Material

BRAZIL: Ceará. Musee d'Histoire Naturelle Genève - as reported in Wilson (2003)


Eponymous. (Wilson 2003)


References based on Global Ant Biodiversity Informatics

  • Fernández, F. and S. Sendoya. 2004. Lista de las hormigas neotropicales. Biota Colombiana Volume 5, Number 1.
  • Forel A. 1908. Catálogo systemático da collecção de formigas do Ceará. Boletim do Museu Rocha 1(1): 62-69.
  • Forel A. 1912. Formicides néotropiques. Part III. 3me sous-famille Myrmicinae (suite). Genres Cremastogaster et Pheidole. Mémoires de la Société Entomologique de Belgique. 19: 211-237.
  • Franco W., N. Ladino, J. H. C. Delabie, A. Dejean, J. Orivel, M. Fichaux, S. Groc, M. Leponce, and R. M. Feitosa. 2019. First checklist of the ants (Hymenoptera: Formicidae) of French Guiana. Zootaxa 4674(5): 509-543.
  • Kempf, W.W. 1972. Catalago abreviado das formigas da regiao Neotropical (Hym. Formicidae) Studia Entomologica 15(1-4).
  • Kusnezov N. 1952. El género Pheidole en la Argentina (Hymenoptera, Formicidae). Acta Zoologica Lilloana 12: 5-88.
  • Kusnezov N. 1978. Hormigas argentinas: clave para su identificación. Miscelánea. Instituto Miguel Lillo 61:1-147 + 28 pl.