Pheidole rosula

AntWiki: The Ants --- Online
Pheidole rosula
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Myrmicinae
Tribe: Attini
Genus: Pheidole
Species: P. rosula
Binomial name
Pheidole rosula
Wilson, 2003

Nothing is known about the biology of rosula.


See the description in the nomenclature section.

Keys including this Species


Only known from the type locality.

Latitudinal Distribution Pattern

Latitudinal Range: -28.4° to -34.585032°.

Tropical South

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.

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.




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

  • rosula. Pheidole rosula Wilson, 2003: 743, figs. (s.w.) ARGENTINA.

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


Similar in various characters to Pheidole guayasana, Pheidole pidax, Pheidole rosae, Pheidole securigera, especially rosae, and distinguished as follows.

Major: reddish yellow; frontal lobes extended forward as low but still conspicuous lobes, in side view; shallow antennal scrobes present, with surfaces smooth except for scattered foveae; postpetiole spinose; rugoreticulum on each side of head extends from eye to antennal fossa, posterior to eye for about an Eye Length distance, and anterior almost to the anterior genal border; carinulae extend to occiput, which is smooth; anterior half of pronotal dorsum carinulate; pilosity dense and long, with some hairs longer than Eye Length.

Minor: most of head and mesosoma variably foveolate; frontal lobes carinulate; humerus in dorsal-oblique view denticulate; propodeal spines reduced to denticles.

MEASUREMENTS (mm) Holotype major: HW 1.22, HL 1.28, SL 0.54, EL 0.16, PW 0.72. Paratype minor: HW 0.62, HL 0.64, SL 0.54, EL 0.12, PW 0.40.

COLOR Major: body and mandibles reddish yellow, appendages plain dark yellow.

Minor: concolorous light reddish yellow.

Pheidole rosula Wilson 2003.jpg

Figure. Upper: holotype, major. Lower: paratype, minor. Scale bars = 1 mm.

Type Material

ARGENTINA: Palermo, Buenos Aires, col. R. Thaxter. Museum of Comparative Zoology


L rosula, little rose, alluding to similarity with Pheidole rosae.