Myrmica dimidiata

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Myrmica dimidiata
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Myrmicinae
Tribe: Myrmicini
Genus: Myrmica
Species: M. dimidiata
Binomial name
Myrmica dimidiata
Say, 1836

This taxon is considered to be unidentifiable and its identity is uncertain.



Distribution based on type material

United States (type locality).

Distribution based on AntMaps


Distribution based on AntWeb specimens

Check data from AntWeb




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

  • dimidiata. Myrmica dimidiata Say, 1836: 293 (q.) U.S.A.
    • Status as species: Mayr, 1863: 432; Dalla Torre, 1893: 109.
    • Junior synonym of ruginodis: Weber, 1947: 448; Bolton, 1995b: 278.
    • Unidentifiable taxon; incertae sedis in Myrmicinae: Smith, D.R. 1979: 1414.

Taxonomic Notes

Say (1836) - original description: 5. M. dimidiata. Body pale yellowish: thorax somewhat tinged with piceous: wings with a very slight tinge of yellowish; discoidal cellule in length nearly twice its breadth ; separating nervure between the first and second cubital cellules abruptly ending at the middle of the usual length, being entirely wanting on the basal half.

Length over one fifth of an inch.

Weber (1947): Myrmica dimidiata Say from the United States was described as "body pale yellowish: thorax somewhat tinged with piceous" ... "length over one-fifth of an inch;" the omitted part of the description deals with the wings and is a purely generic diagnosis. The color of the body is that of no nearctic Myrmica female [queen] although the size might be that of any of the forms of Eastern America. It is unsatisfactorily synonymized with the type species of the genus since the actual specimen appears to be lost and it is impossible otherwise to correlate it with known forms.



  • Say, T. 1836. Descriptions of new species of North American Hymenoptera, and observations on some already described. Boston J. Nat. Hist. 1: 209-305 (page 293, queen described)
  • Weber, N. A. 1947b. A revision of the North American ants of the genus Myrmica Latreille with a synopsis of the Palearctic species. I. Ann. Entomol. Soc. Am. 40: 437-474 (page 448, Junior synonym of ruginodis)