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Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Myrmicinae
Tribe: Crematogastrini
Genus: Geognomicus
Menozzi, 1924
Type species
Geognomicus wheeleri (junior synonym of Dicroaspis cryptocera)

Dicroaspis cryptocera casent0401720 profile 1.jpg

Dicroaspis cryptocera casent0401720 dorsal 1.jpg

Specimen Label

This genus is not in use as it is currently considered to be a junior synonym of Dicroaspis.


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

  • GEOGNOMICUS [junior synonym of Dicroaspis]
    • Geognomicus Menozzi, 1924b: 220. Type-species: Geognomicus wheeleri (junior synonym of Dicroaspis cryptocera), by original designation.
    • [Geognomicus as genus: Wheeler, G.C. & Wheeler, J. 1985: 257 (anachronism); Dlussky & Fedoseeva, 1988: 81 (anachronism).]
    • Geognomicus junior synonym of Dicroaspis: Bolton, 1981a: 56; Bolton, 1994: 106.


  • Bolton, B. 1981a. A revision of the ant genera Meranoplus F. Smith, Dicroaspis Emery and Calyptomyrmex Emery (Hymenoptera: Formicidae) in the Ethiopian zoogeographical region. Bull. Br. Mus. (Nat. Hist.) Entomol. 42: 43-81 (page 56, Geognomicus as junior synonym of Dicroaspis)
  • Bolton, B. 1994. Identification guide to the ant genera of the world. Cambridge, Mass.: Harvard University Press, 222 pp. (page 106, Geognomicus as junior synonym of Dicroaspis)
  • Bolton, B. 2003. Synopsis and Classification of Formicidae. Mem. Am. Entomol. Inst. 71: 370pp (page 203, Geognomicus as junior synonym of Dicroaspis)
  • Dlussky, G. M.; Fedoseeva, E. B. 1988. Origin and early stages of evolution in ants. Pp. 70-144 in: Ponomarenko, A. G. (ed.) Cretaceous biocenotic crisis and insect evolution. Moskva: Nauka, 232 pp. (page 81, Geognomicus as genus (anachronism))
  • Donisthorpe, H. 1943g. A list of the type-species of the genera and subgenera of the Formicidae. [part]. Ann. Mag. Nat. Hist. 11(10): 617-688 (page 647, Geognomicus in Myrmicinae, Meranoplini)
  • Menozzi, C. 1924b. Alcune nuove formiche africane. [part]. Ann. Mus. Civ. Stor. Nat. "Giacomo Doria" 51: 220-224 (page 220, Geognomicus in Myrmicinae, Meranoplini)
  • Wheeler, G. C.; Wheeler, J. 1985b. A simplified conspectus of the Formicidae. Trans. Am. Entomol. Soc. 111: 255-264 (page 257, Geognomicus as genus (anachronism))
  • Wheeler, W. M. 1935a. Two new genera of myrmicine ants from Papua and the Philippines. Proc. N. Engl. Zool. Club 15: 1-9 (page 7, Geognomicus in Myrmicinae, Meranoplini)