Neoponera fiebrigi

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Neoponera fiebrigi
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Ponerinae
Tribe: Ponerini
Genus: Neoponera
Species: N. fiebrigi
Binomial name
Neoponera fiebrigi
Forel, 1912

Pachycondyla fiebrigi casent0907244 p 1 high.jpg

Pachycondyla fiebrigi casent0907244 d 1 high.jpg

Specimen Labels

From Mackay and Mackay (2010): A dealate female was collected in June (Paraguay, National Museum of Natural History). We collected a nest in a log with brood in the nest in December (Argentina).


From Mackay and Mackay (2010): Neoponera fiebrigi is obviously closely related to Neoponera crenata and Neoponera moesta, but differs in being much larger (total length of N. crenata is about 6 mm) and in having a different shaped petiole. The petioles of workers of N. crenata and N. moesta (measured using the same boundaries as above) are slightly higher than long (N. crenata: approximately 0.55 mm in length and 0.65 mm in height, for N. moesta approximately 0.70 mm long, 0.80 mm high). From above the node of the worker of N. fiebrigi is larger (length 0.70 - 0.88 mm, width 0.88 - 1.05 mm), those of N. crenata and N. moesta are only slightly wider than long (N. crenata: approximately 0.55 mm in length, 0.65 mm in width, N. moesta: 0.70 mm long, 0.85 mm wide).

Neoponera fiebrigi can be easily separated from Neoponera globularia as the petiole is not circular or oval-shaped as seen from above. Neoponera fiebrigi is very similar to Neoponera latinoda, with the workers and females being large specimens, approximately the same size. They can be separated as the petiole is not as wide in N. fiebrigi and it is found in Paraguay, whereas N. latinoda is from Brasil. It is likely when these species become well known the distributions will overlap in eastern Brasil. Both Longino (website) and Wild (2005) consider N. crenata to be a variable species or possibly a species complex. Once N. moesta, N. globularia, N. latinoda and N. fiebrigi are recognized as being different, N. crenata becomes much more homogeneous. Ponera Fiebrigi var. antoniensis and var. famini are members of Hypoponera (Kempf, 1972).


PARAGUAY, ARGENTINA (Mackay and Mackay 2010)

Distribution based on Regional Taxon Lists

Neotropical Region: Brazil, Paraguay (type locality).

Distribution based on AntMaps


Distribution based on AntWeb specimens

Check data from AntWeb


Riparian tropical rain forest at 160 meters. (Mackay and Mackay 2010)




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

  • fiebrigi. Neoponera crenata r. fiebrigi Forel, 1912c: 37 (w.) PARAGUAY.
    • Type-material: lectotype worker (by designation of Mackay & Mackay, 2010: 324), 2 paralectotype workers.
    • Type-locality: lectotype Paraguay: San Bernardino (Fiebrig); paralectotypes with same data.
    • Type-depository: MHNG.
    • Mackay & Mackay, 2010: 325 (q.).
    • Combination in Pachycondyla: Mackay & Mackay, 2010: 324;
    • combination in Neoponera: Schmidt, C.A. & Shattuck, 2014: 151.
    • Junior synonym of crenata: Brown, 1957e: 234; Bolton, 1995b: 305.
    • Subspecies of crenata: Kempf, 1972a: 162.
    • Status as species: Mackay & Mackay, 2010: 324 (redescription).
    • Distribution: Argentina, Paraguay.

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



From Mackay and Mackay (2010): The worker is a moderate sized (total length 8.5 mm) dark reddish brown species with medium reddish brown mandibles, clypeus, cheeks, antennae and legs. The mandibles have approximately 12 teeth. The anterior medial margin of the clypeus forms a small lobe which overhangs the remainder of the clypeus. The head is narrowed anteriorly and the posterior margin is slightly concave. The malar carina is well developed and extends to the region medial of the eye. The eyes are large (maximum diameter 0.45 mm) located about ½ diameter from the anterior margin of the head (side view). The scape extends about the first funicular segment past the posterior lateral corner of the head. The pronotal shoulder is formed into a sharp carina, which slightly overhangs the side of the pronotum. The promesonotal suture is well marked on the dorsum of the mesosoma; the metanotal suture does not break the sculpture on the dorsum of the mesosoma. The propodeal spiracle is elongated. The petiole is thickened when viewed in profile but is higher than long (the length at the peduncles is 0.70 - 0.88 mm, the height from the lower suture to the apex is 1 mm). The subpetiolar process consists of a broad anterior lobe, a concave surface and a broadly rounded posterior lobe. The stridulatory file is well developed on the second pretergite and the arolia are present but poorly developed.

Long (up to 0.4 mm) erect hairs are present on the clypeus, mandibles, scapes, dorsal and ventral surfaces of the head, dorsum of the mesosoma, dorsum of the petiole and all surfaces of the gaster, similar hairs are present on the legs, including the tibiae. Appressed whitish pubescence is moderately abundant on the head, mesosoma, dorsum of the petiole and on the gaster. The surface of the mandibles is finely striate and dull, the medial lobe of the clypeus is often longitudinally striate, the dorsum of the head is heavily and densely punctate, the dorsum of the mesosoma is punctate, but moderately shining, the side of the pronotum is finely punctate and shining and the remainder of the side of the mesosoma is mostly finely striate and moderately shining. The side of the petiole is finely punctate and moderately shining, the anterior face has similar sculpture, the posterior face is mostly shining. The gaster is covered with punctures, but is moderately shining.


From Mackay and Mackay (2010): The female (undescribed) is a moderate sized (total length 9 mm) dark reddish brown specimen with reddish mandibles, clypeus, cheeks and appendages. The mandibles have eleven teeth; the anterior margin of the clypeus is convex, especially in the medial area, which is somewhat angulate. The head is 1.96 mm long and 1.66 mm wide. The sides of the head are nearly parallel, but convex and narrowed anteriorly. The posterior margin is slightly convex. The malar carina is well developed and extends to the eye. The eye is large (maximum diameter 0.60 mm) located about ½ of the maximum diameter from the anterior margin of the head (side view). The scape is moderate in length (1.66 mm) and extends slightly more than the first funicular segment past the posterior lateral corner. The pronotal carina is sharp, well developed and slightly overhangs the side of the pronotum. The propodeal spiracle is slit-shaped. The petiole is thick when viewed in profile, with the anterior and posterior faces being nearly parallel (in profile) and forming a broadly rounded dorsal face. The petiole is wider (1.04 mm) than long 0.72 mm) when viewed from above. The subpetiolar process is well developed and consists of an angulate anterior lobe and a broadly convex posterior lobe, separated by a concave region. The anterior face of the postpetiole is straight and broadly rounded into the dorsal face. The pretergite has a well-developed stridulatory file, but the arolium between the tarsal claws is poorly developed.

Erect hairs are mostly long (up to 0.2 mm) and are present on the mandibles, clypeus, dorsal and ventral surfaces of the head, sides of the head, posterior margin, scapes, dorsum of the mesosoma, dorsal and posterior faces of the petiole and all surfaces of the gaster. Appressed golden pubescence is present on the head, dorsum of the mesosoma, anterior and dorsal faces of the petiole and all surfaces of the gaster. The mandibles are finely punctate mixed with coarse punctures and are dull. The dorsum of the head as well as the surface of the scapes, are finely and densely punctate, the dorsum of the mesosoma and side of the propodeum have similar sculpture, but the punctures are less well-developed, the side of the pronotum, mesopleuron and metapleuron are glossy and finely coriaceous (pronotum), or finely striolate (metapleuron). The petiole is finely punctate and moderately (sides and front) to strongly (posterior face) glossy and shining. The gaster is finely punctate and moderately shining.


Males are not known for this species.

Type Material

San Bernardino, Paraguay. lectotype worker, 2 paralectotype workers seen, Musee d'Histoire Naturelle Genève (Mackay and Mackay 2010)


This species was named in honor of Mr. Fiebrig, who collected the type series. (Mackay and Mackay 2010)


References based on Global Ant Biodiversity Informatics

  • Fernández F. 2008. Subfamilia Ponerinae s.str. Pp. 123-218 in: Jiménez, E.; Fernández, F.; Arias, T.M.; Lozano-Zambrano F. H. (eds.) 2008. Sistemática, biogeografía y conservación de las hormigas cazadoras de Colombia. Bogotá: Instituto de Investigación de Recursos Biológicos Alexander von Humboldt, xiv + 609 pp.
  • Forel A. 1912. Formicides néotropiques. Part I. Annales de la Société Entomologique de Belgique. 56: 28-49.
  • Kempf, W.W. 1972. Catalago abreviado das formigas da regiao Neotropical (Hym. Formicidae) Studia Entomologica 15(1-4).
  • Mackay, W.P. and E.E. MacKay. 2010. The systematics and biology of the New World ants of the genus Pachycondyla (Hymenoptera: Formicidae). Edwin Mellen Press Lewiston, NY