Solenopsis weyrauchi

AntWiki: The Ants --- Online
Solenopsis weyrauchi
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Myrmicinae
Tribe: Solenopsidini
Genus: Solenopsis
Species group: saevissima
Species: S. weyrauchi
Binomial name
Solenopsis weyrauchi
Trager, 1991

Solenopsis weyrauchi casent0902356 p 1 high.jpg

Solenopsis weyrauchi casent0902356 d 1 high.jpg

Specimen Labels

Nothing is known about the biology of Solenopsis weyrauchi.


A member of the Solenopsis saevissima species-group.

Keys including this Species


Pitts et. al. (2018) - Solenopsis weyrauchi was previously known only from several widely spaced locations at high elevations in the Peruvian Andes. The holotype is from Cajamarca, Peru. As the new locality data suggest and as Trager (1991) predicted, the range of S. weyrauchi likely extends throughout the Andes, at least from Peru to Bolivia, but perhaps as far northward as Columbia and southward as Argentina and Chile.

Distribution based on Regional Taxon Lists

Neotropical Region: Colombia, Peru (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.

  • weyrauchi. Solenopsis weyrauchi Trager, 1991: 190, figs. 76, 77, 80, 81 (w.) PERU.
    • Type-material: holotype worker, 28 paratype workers.
    • Type-locality: holotype Peru: Abra Gavilán b. Cajamarca, 2500 m., #709 (Weyrauch); paratypes with same data.
    • Type-depositories: LACM (holotype); IMLT, LACM, MCZC (paratypes).
    • Status as species: Bolton, 1995b: 392; Bezděčková, et al. 2015: 122; Pitts, et al. 2018: 367 (redescription).
    • Distribution: Bolivia, Peru.

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


Pitts et. al. (2018) - Head ovate to subrectangular. Head sculpture with small piligerous foveolae, ~0.01 mm in diameter. Median frontal streak present, sometimes consisting of 2 elongate darkened spots. Median ocellus in largest major workers absent. Mandibular costulae usually well developed throughout entire length, sometimes obsolescent near base. Mesonotum with 30 or more setae. Promesonotal suture in largest major workers gently curved medially, never projecting upward. Mesonotum weakly convex in lateral view. Propodeum sculpture glabrous posteroventral to spiracle. Postpetiole shape as high as or higher than broad. Postpetiole sculpture in posterior view with lower 0.50–0.75 transversely rugose, upper surface shiny with some piligerous foveolae present. Color of head, mesonotum and T1 maculation red yellow. Remainder of gaster black brown. Propodeum and dorsum of petiolar nodes yellow brown. Sometimes rear portion of head, frons around median streak, and pronotum yellow brown. T1 maculations with 2 small anterolateral spots.

Type Material

Pitts et. al. (2018) - Holotype worker. “Abra Gavilan b. Caramarca, 2, 800 m. PERU. #709. ex. col. Weyrauch. Los Angeles County Museum of Natural History.


References based on Global Ant Biodiversity Informatics

  • Bezdeckova K., P. Bedecka, and I. Machar. 2015. A checklist of the ants (Hymenoptera: Formicidae) of Peru. Zootaxa 4020 (1): 101–133.
  • Fernández, F. and S. Sendoya. 2004. Lista de las hormigas neotropicales. Biota Colombiana Volume 5, Number 1.
  • Trager J. C. 1991. A revision of the fire ants, Solenopsis geminata group (Hymenoptera: Formicidae: Myrmicinae). Journal of the New York Entomological Society 99: 141-198