Eulithomyrmex

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Eulithomyrmex
Temporal range: Late Eocene
Florissant, Colorado, United States
Eulithomyrmex rugosus
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Agroecomyrmecinae
Genus: Eulithomyrmex
Carpenter, 1935
Type species
Lithomyrmex rugosus, now Eulithomyrmex rugosus
Diversity
2 fossil species
(Species Checklist)
Synonyms
Eulithomyrmex rugosus Paratype no 17.019a (queen)

There are two fossil species in the genus Eulithomyrmex, both species are known from Florissant shale (Oligocene) in the United Sates. At this time Eulithomyrmex is placed within the subfamily Agroecomyrmecinae.

Identification

Female. - Head subquadrate; mandibles small; clypeus large; antennal scrobes present; antennae short, 12-segmented, with a two-jointed club; eipinotumm not armed; petiole and postpetiole short and compressed, the forewing with two cubital cells; head, thorax, and pedicel, coarsely sculptured.

Male. - Antennae 13-segmented; scape short, but a little longer than the second segment; sculpturing weaker than that of the female; forewing with two cubital cells.

Worker. - Very similar to the female, apparently differing only in the smaller size.

Distribution

This taxon is known from Florissant, Colorado, United States (Late Eocene).

Castes

Queens, males and workers known.

Nomenclature

The following information is derived from Barry Bolton's New General Catalogue, a catalogue of the world's ants.

  • EULITHOMYRMEX [Agroecomyrmecinae]
    • Eulithomyrmex Carpenter, 1935: 91. Replacement name for †Lithomyrmex Carpenter, 1930: 34. [Junior homonym of Lithomyrmex Clark, 1928a: 30.]
  • LITHOMYRMEX [junior homonym, see †Eulithomyrmex]
    • Lithomyrmex Carpenter, 1930: 34. Type-species: †Lithomyrmex rugosus, by original designation. [Junior homonym of Lithomyrmex Clark, above.]
    • Eulithomyrmex Carpenter, 1935: 91, replacement name for †Lithomyrmex Carpenter.

References

  • Bolton, B. 1994. Identification guide to the ant genera of the world. Cambridge, Mass.: Harvard University Press, 222 pp. (page 105, Eulithomyrmex in Myrmicinae, Agroecomyrmecini)
  • Bolton, B. 1995b. A new general catalogue of the ants of the world. Cambridge, Mass.: Harvard University Press, 504 pp. (page 189, Eulithomyrmex in Myrmicinae, Agroecomyrmecini)
  • Bolton, B. 2003. Synopsis and Classification of Formicidae. Mem. Am. Entomol. Inst. 71: 370pp (page 181, Eulithomyrmex in Myrmicinae, Agroecomyrmecini)
  • Brown, W. L., Jr.; Kempf, W. W. 1968 [1967]. Tatuidris, a remarkable new genus of Formicidae (Hymenoptera). Psyche (Camb.) 74: 183-190 (page 184, Eulithomyrmex in Myrmicinae, Agroecomyrmecini)
  • Carpenter, F. M. 1930. The fossil ants of North America. Bull. Mus. Comp. Zool. 70: 1-66 PDF
  • Carpenter, F. M. 1935. A new name for Lithomyrmex Carp. (Hymenoptera). Psyche (Camb.) 42: 91 PDF (page 91, Lithomyrmex Carpenter, 1930 a junior homonym of Lithomyrmex Clark, 1928; Eulithomyrmex replacement name for Lithomyrmex Carpenter, 1930:34)
  • Ward, P.S., Brady, S.G., Fisher, B.L. & Schultz, T.R. 2010. Phylogeny and biogeography of Dolichoderinae ants: effects of data partitioning and relict taxa on historical inference. Systematic Biology 59: 342-362 [1]