Contribution to the Knowledge of the Genus Proceratium Roger (Hymenoptera: Formicidae: Proceratiinae) in the New World




type material, hypogeic ant, new records, new species, P. micrommatum species key


The genus Proceratium Roger comprises rare ants that are irregularly distributed in tropical and temperate regions of the world. Despite this global distribution, these ants are rarely collected, likely due to their cryptobiotic lifestyle. In the New World, the genus comprises 22 known species distributed from Southern Canada to the South of Brazil, and in some Caribbean islands. The taxonomy of the genus Proceratium is here updated for South America. We describe P. amazonicum sp. nov, from Rondônia state and provide distribution data for P. brasiliense, P. convexipes, and P. silaceum. We also present, for the first time, high-resolution images of the P. colombicum type and P. ecuadoriense, and provide a new record of P. micrommatum from Peru, and comment about its morphological variation and distribution. A key for the workers of the P. micrommatum clade is also provided. The species we describe belongs to P. micrommatum clade and represents the second species recorded from Brazil after 60 years, since only P. brasiliense was known previously in the country.


Download data is not yet available.

Author Biographies

Itanna Oliveira Fernandes, Instituto Nacional de Pesquisas da Amazônia - INPA

Coordenação em Biodiversidade CBio/EntomologiaLaboratório TEAM Formigas INPA IIAv: André Araújo, 2936. Petrópolis.
Manaus - AM. Brasil, 69067-375.

Jacques Hubert Charles Delabie, Centro de Pesquisas do Cacau - CEPEC CEPLAC Universidade Estadual de Santa Cruz (UESC)

Departamento de Ciências Agrárias e Ambientais (DCAA) KM. 16 rod Ilhéus-Itabuna
45662-900 Ilhéus - Bahia - Brasil

Fernando Castiblanco Fernández, Instituto de Ciencias Naturales Universidad Nacional de Colombia

Instituto de Ciencias Naturales
Universidad Nacional de Colombia
Carrera 30 No. 45 - 03
Bogotá D.C. Colombia


Achury R. & A.V. Suarez. (2017). Richness and composition of ground-dwelling ants in tropical rainforest and surrounding landscapes in the Colombian Inter-Andean valley. Neotropical Entomology, 47: 731-741. doi: 10.1007/s13744-017-0565-4

Anderson, J. M. & Ingram, J. S. I. (Eds.) (1993). Tropical soil biology and fertility: A handbook of methods (2nd ed.). Wallingford CAB International, 237 p.

AntWeb v8.3.7 (2019). Available at:

Baroni Urbani C. & de Andrade, M.L. (2003). The ant genus Proceratium in the extant and fossil record (Hymenoptera: Formicidae). Museo Regionale di Scienze Naturali, Monografie, 36: 1-480. doi: 10.1002/mmnz.20040800210

Bestelmeyer, B.T., Agosti, D., Alonso, L.E., Brandão, C.R.F.R., Brown, W. Jr., Delabie, J.H.C. & Silvestre, R. (2000). Field techniques for the study of ground–living ants: an overview, description, and evaluation. In: Agosti, D., Majer, J., Alonso, E. & Schultz, T.R. (Eds.), Ants, Standard Methods for Measuring and Monitoring Biodiversity, (pp. 122–144). Washington, DC: Smithsonian Institution.

Bolton, B. (1994). Identification guide to the ant genera of the world. Cambridge: Harvard University Press, 222 p.

Bolton, B. (2019). An online catalog of the ants of the world. [accessed 21 January, 2019]

Brown, W.L. (1958). Predation of arthropod eggs by the ant genera Proceratium and Discothyrea. Psyche, 64: 115. doi: 10.1155/1957/45849

Brown, W.L. (1974). A remarkable new island isolate in the genus Proceratium (Hymenoptera: Formicidae). Psyche 81: 70-83. doi: 10.1155/1974/90949

Brown, W.L. (1979). A remarkable new species of Proceratium with dietary and other notes on the genus (Hymenoptera: Formicidae). Psyche, 86: 337-346. doi: 10.1155/1979/78461

Escárraga, M., Longino J.T & Sosa-Calvo, J. (2019). Capítulo 23. Subfamilia Proceratiinae. Pp 681-691 in F. Fernández, R.J. Guerrero & T. Delsinne (eds) Hormigas de Colombia, Universidad Nacional de Colombia, Bogotá D.C.

Feitosa, R.M. (2015). Estado da arte sobre a taxonomia e filogenia de Proceratiinae. In: Delabie, J.H.C., Feitosa, R.M., Serrão, J.E., Mariano, C.S.F. & Majer, J.D. (Eds.), As formigas Poneromorfas do Brasil (pp. 81-83). Editus: Ilhéus, Bahia.

Forel, A. (1918). Études myrmécologiques en 1917. Bulletin de la Société Vaudoise des Sciences Naturelles, 51: 717-727.

Harris, R.A. (1979). A glossary of surface sculpturing. California Department of Food and Agriculture, Bureau of Entomology, 28: 1-31.

Hita Garcia, F., Hawkes, P. G. & Alpert, G. D. (2014). Taxonomy of the ant genus Proceratium Roger (Hymenoptera, Formicidae) in the Afrotropical region with a revision of the P. arnoldi clade and description of four new species. ZooKeys, 447: 47-86. doi: 10.3897/zookeys.447.7766.

Hita Garcia, F., Sarnat, E.M. & Economo, E.P. (2015). Revision of the ant genus Proceratium Roger (Hymenoptera, Proceratiinae Formicidae) in Fiji. Zookeys, 475: 97-112. doi. 10.3897/zookeys.475.8761

Janicki, J., Narula, N., Ziegler, M., Guénard, B. & Economo, E.P. (2016). Visualizing and interacting with large-volume biodiversity data using client-server web-mapping applications: The design and implementation of Ecological Informatics, 32: 185-193.

Liu, C., Fisher, B.L. & Economo, E. P. (2015). A rare ant on Samoa: first record of the cryptic subfamily Proceratiinae (Hymenoptera, Formicidae) and description of a new Proceratium Roger species. Journal of Hymenoptera Research, 46: 35-44. doi: 10.3897/JHR.46.5849

Masuko, K. (2019). Predation on non-spider arthropod eggs and colony bionomics of the ant Proceratium itoi (Hymenoptera: Formicidae). Annals of the Entomological Society of America, 112: 372-378. doi: 10.1093/aesa/saz012

Roger, J. (1863). Die neu aufgeführten Gattungen und Arten meines Formiciden-Verzeichnisses nebst Ergänzung einiger früher gegebenen Beschreibungen. Berliner Entomologische Zeitschrift, 7: 131-214.

Salazar F., F. Reyes-Bueno, D. Sanmartin, & D. A. Donoso. 2015. Mapping continental Ecuadorian ant species. Sociobiology, 62: 132-162.

Sosa-Calvo, J. & Longino, J. (2008). Subfamilia Proceratiinae. In: Jiménez, E., Fernández, F.C., Arias, T.M. & Lozano-Zambrano, F.H. (Eds.) Sistematica, Biogeografia y Conservación de las hormigas cazadoras de Colombia (pp. 219-327). Bogotá: Instituto de Inverstigación de Recursos Biolólogicos Alexander von Humboldt.

Staab, M., Hita Garcia, F., Liu, C., Xu, Z.H. & Economo, E.H. (2018). Systematics of the ant genus Proceratium Roger (Hymenoptera: Formicidae: Proceratiinae) in China – with description of three new species based on micro-CT enhanced next-generation-morphology. Zookeys, 770: 137-192. doi: 10.3897/zookeys.770.24908.

Ward, P.S. (1988). Mesic elements in the Western Neartic ant fauna: taxonomic and biological notes on Amblyopone, Proceratium, and Smithistruma (Hymenoptera: Formicidae). Journal of the Kansas Entomology Society, 61: 102-124.

Wilson, E.O. (1955). A monographic revision of the ant genus Lasius. Bulletin of the Museum of Comparative Zoology, 113: 1-201.




How to Cite

Fernandes, I. O., Delabie, J. H. C., & Fernández, F. C. (2019). Contribution to the Knowledge of the Genus Proceratium Roger (Hymenoptera: Formicidae: Proceratiinae) in the New World. Sociobiology, 66(4), 551–559.



Research Article - Ants

Most read articles by the same author(s)

1 2 3 > >>