Allomerus dentatus

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

Nothing is known about the biology of Allomerus dentatus.

Identification

Fernández (2007) - Distinguished from the majority of the species in the genus because of its propodeal teeth and the larger propodeal spiracle that is located close to the propodeal tooth base and its opening is directed towards the sides and behind. Besides, the central apical clypeal seta is larger than its neighbors and the antennal scape thickens gradually apically. Allomerus vogeli and Allomerus maietae are two other species with propodeal teeth or spines. Allomerus dentatus and A. vogeli are similar in their general aspect and with lateral reticulation on the mesosoma. In A. vogeli the spiracle opening is lateral (posterior in A. dentatus) and so is seen as larger in lateral view; there are also several long hairs on the thorax and head. In A. maietae the propodeal spiracle position (high in this species) and hair length (nearly 0.2 mm) are characters that separate it easily from A. dentatus.

Keys including this Species

Key to Allomerus species

Distribution

Distribution based on Regional Taxon Lists

Neotropical Region: Colombia, Venezuela (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.

Biology

Castes

Known only from the worker caste.

Nomenclature

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

dentatus. Allomerus dentatus Fernández, 2007a: 166, fig. 2 (w.) VENEZUELA.
- Type-material: holotype worker.
- Type-locality: Venezuela: Territorio Federal de Amazonas, Rio Guainía, Sabana, El Venado, Caño Pimichín, 23.xi.1953 (no collector’s name).
- Type-depository: MZSP.
- Status as species: Guerrero, Fernández, et al. 2018: 240; Fernández & Serna, 2019: 835.
- Distribution: Colombia, Venezuela.

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

Description

Worker

Fernández 2007, Fig 2.

Holotype: HW 0.41 HL 0.50 SL 0.33 WL 0.45 GL 0.60 TL 2.00 CI 83 SI 79.

Antennae apparently 10 segmented. In side view, promesonotum slightly convex. Propodeal dorsal face short, declivity and basal faces separated by pair of teeth. Propodeal spiracle aperture opens posterolaterally, with large aperture and close to base of propodeal tooth. Petiole with peduncle shorter than node. Body smooth and shining, especially head. Sides of propodeum finely reticulate-rugose. Dorsum of mesosoma with long hairs (about 0.12 mm in length), present on postpetiole and gaster; very few on petiole and none on head and mesosoma. Row of short clypeal hairs on anterior margin, medial hair conspicuous. Concolorous brown, hairs whitish.

Type Material

Holotype: VENEZUELA, Territorio Federal de Amazonas, Río Guainía, Sabana, El Venado, Caño Pimichín, en Tococa hirta NYBG WWB No. 568H), 23 nov 1953 (Museu de Zoologia da Universidade de Sao Paulo).

References

References based on Global Ant Biodiversity Informatics

Fernández F. 2007. The myrmicine ant genus Allomerus Mayr (Hymenoptera: Formicidae). Caldasia 29: 159-175.