Allomerus undecemarticulatus

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Allomerus undecemarticulatus
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Myrmicinae
Tribe: Attini
Genus: Allomerus
Species: A. undecemarticulatus
Binomial name
Allomerus undecemarticulatus
Fernández, 2007

Nothing is known about the biology of Allomerus undecemarticulatus.


Fernández (2007) - This is an atypical Allomerus species, and may not belong to the genus. There are 11-segments, the majority of the species possesses 10 or fewer. The holotype antennae are lost, but the box in which it was separated had a label that said “undecemarticulatus”. The head is clearly longer than wide and the scape has the same width along the shaft. The propodeum is at almost the same level as the promesonotum. The presence of a weakly impressed promesonotal suture is discordant, because it is not well known from myrmicines and lacking in almost all solenopsidines. More specimens from this interesting species are needed, in order to confirm its placement in the genus.

Keys including this Species


Distribution based on Regional Taxon Lists

Neotropical Region: Venezuela (type locality).

Distribution based on AntMaps


Distribution based on AntWeb specimens

Check data from AntWeb



Known only from the worker caste.


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

  • undecemarticulatus. Allomerus undecemarticulatus Fernández, 2007a: 172, fig. 6 (w.) VENEZUELA.

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



Fernández 2007, Fig 6.

Holotype: HW 0.59 HL 0.69 SL 0.44 WL 0.76 GL 0.81 TL 3.00 CI 85 SI 74.

Head clearly longer than wider. Antennae 11 segmented. Scapes not thickening apicad. Promesonotum feebly convex in lateral view. Pronotal suture feebly impressed dorsally. Propodeal dorsal face long, slightly below same plane of promesonotum. Propodeum sharply angulate, with dorsal face as long as posterior face. Propodeal spiracle and bullae conspicuous. Petiole with peduncle longer than node; node slender. Body smooth and shining, especially head. Sides of propodeum with longitudinal, irregular carinulae. Dorsum of body with long and short hairs (less than 0.08 mm in length): row of short anterior clypeal hairs, central conspicuous. Head light brown, rest of body brown yellowish, hairs whitish.

Type Material

Holotype: VENEZUELA, Territorio Federal de Amazonas, Yatua River, Cerro La Neblina, in Tococa pachystachya, 1800 – 1900 m., 17.nov.1957, Maguirre et al. 42126 (Museu de Zoologia da Universidade de Sao Paulo).