Pheidole heyeri

Nothing is known about the biology of heyeri.

Identification
See the description in the nomenclature section.

Distribution
São Paulo and Rio Grande do Sul states, Brazil. (Wilson 2003)

Distribution based on Regional Taxon Lists
Neotropical Region: Brazil.

Worker
Minor

Images from AntWeb
Major

Nomenclature

 *  heyeri. Pheidole guilelmimuelleri var. heyeri Forel, 1899c: 71 (footnote) (s.w.) BRAZIL. Raised to species and senior synonym of ultrix: Wilson, 2003: 706. See also: Forel, 1911c: 302; Forel, 1912f: 321.
 * ultrix. Pheidole guilelmimuelleri var. ultrix Forel, 1912f: 221 (s.) BRAZIL. Junior synonym of heyeri: Wilson, 2003: 706.

Description
DIAGNOSIS From Wilson (2003): Similar especially to Pheidole antillana of the Lesser Antilles, but differing in the following combination of traits.

Major: shallow scrobes, whose surfaces lack sculpturing; small rugoreticula present mesad to the eyes and on the dorsal pronotal margins; dorsal surface of occiput mostly smooth but with scattered foveae; mesonotal convexity subangulate; postpetiole strongly cornulate.

Minor: occiput and lateral posterior quarters of cephalic dorsum transversely carinulate; humerus subangulate in dorsal-oblique view; most of promesonotum rugulose, with margins loosely rugoreticulate. Color of major and minor: reddish yellow.

MEASUREMENTS (mm) Lectotype major: HW 2.02, HL 2.16, SL 0.90, EL 0.22, PW 0.82. Paralectotype minor: HW 0.82, HL 0.86, SL 0.92, EL 0.14, PW 0.54.

COLOR Major: body medium reddish yellow, appendages light reddish yellow.

Minor: body dark reddish yellow, appendages light reddish yellow.



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

Type Material
BRAZIL: São Leopoldo, Rio Grande do Sul. - as reported in Wilson (2003)

Etymology
Eponymous. (Wilson 2003)

References based on Global Ant Biodiversity Informatics

 * Fleck M. D., E. Bisognin Cantarelli, and F. Granzotto. 2015. Register of new species of ants (Hymenoptera: Formicidae) in Rio Grande do Sul state. Ciencia Florestal, Santa Maria 25(2): 491-499.
 * 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.
 * Kempf, W.W. 1972. Catalago abreviado das formigas da regiao Neotropical (Hym. Formicidae) Studia Entomologica 15(1-4).
 * Luederwaldt H. 1918. Notas myrmecologicas. Rev. Mus. Paul. 10: 29-64.
 * Rosa da Silva R. 1999. Formigas (Hymenoptera: Formicidae) do oeste de Santa Catarina: historico das coletas e lista atualizada das especies do Estado de Santa Catarina. Biotemas 12(2): 75-100.