''Monomorium bidentatum'' is a species of

ant Ants are Eusociality, eusocial insects of the Family (biology), family Formicidae and, along with the related wasps and bees, belong to the Taxonomy (biology), order Hymenoptera. Ants evolved from Vespoidea, vespoid wasp ancestors in the Cre ...

in the subfamily

Myrmicinae Myrmicinae is a subfamily In biological classification, a subfamily (Latin: ', plural ') is an auxiliary (intermediate) taxonomic rank, next below family but more inclusive than genus. Standard nomenclature rules end botanical subfamily ...

. It is

endemic Endemism is the state of a species being found only in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also foun ...

to two South American countries,

Chile Chile, officially the Republic of Chile, is a country in western South America. It is the southernmost country in the world and the closest to Antarctica, stretching along a narrow strip of land between the Andes, Andes Mountains and the Paci ...

and

Argentina Argentina, officially the Argentine Republic, is a country in the southern half of South America. It covers an area of , making it the List of South American countries by area, second-largest country in South America after Brazil, the fourt ...

Description

Workers are around long. The general color is dark brown, with the mandibles, antennae and legs slightly lighter. Females are almost long, but otherwise very similar to workers.

Distribution

''M. bidentatum'' is found in

and

. It was first described from

Valdivia, Chile Valdivia (; Mapuche language, Mapuche: Ainil) is a List of cities in Chile, city and Communes of Chile, commune in Southern Chile, southern Chile, administered by the Municipality of Valdivia. The city is named after its Organizational founder, ...

Taxonomy

The genus '' Antichthonidris'' contained only two species, ''A. bidentata'' and '' A. denticulata''. Both species were originally described by

Gustav Mayr Gustav L. Mayr (12 October 1830 – 14 July 1908) was an Austrian Entomology, entomologist and professor in Budapest and Vienna. He specialised in Hymenoptera, being particularly known for his studies of ants.Monomorium ''Monomorium'' is a genus of ants in the subfamily Myrmicinae. As of 2013 it contains about 396 species. It is distributed around the world, with many species native to the Old World tropics. It is considered to be "one of the more important grou ...

''. However, ''Antichthonidris'' was synonymized with ''Monomorium'' in 2001, so that this genus is no longer valid, and the two species are again known under their original name.

References

bidentatum Hymenoptera of South America Insects of Chile Insects of Argentina Insects described in 1887 Taxa named by Gustav Mayr Taxonomy articles created by Polbot Taxobox binomials not recognized by IUCN {{myrmicinae-stub