Hylomyrma reginae

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Hylomyrma reginae
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Myrmicinae
Tribe: Pogonomyrmecini
Genus: Hylomyrma
Species: H. reginae
Binomial name
Hylomyrma reginae
Kutter, 1977

Hylomyrma reginae casent0900392 p 1 high.jpg

Hylomyrma reginae casent0900392 d 1 high.jpg

Specimen Labels

This species is recorded from tropical rainforests (in the Amazon and in Inselberg forests; primary and secondary forests) at elevations between 60 and 1051 m. Specimens are frequently found in leaf-litter samples, which suggests that nests are located in fallen logs, rotten wood, between leaves, or inside natural cavities of the superficial soil layers. Except for the presence of intercastes, there is no further information available regarding the biology of H. reginae. (Ulyssea & Brandao, 2021)


Regular to slightly irregular and longitudinal striae on head dorsum diverge towards posterior margin, interspaces between striae smooth; striae crest punctuated; striae on mesosoma assuming multiple directions, interspaces indistinguishable; pronotum posterior region, mesonotum, and metanotal groove region with semielliptical to V-shaped striae; dorsal margin of petiole continuous, convex; subtriangular projection on mesoventral surface of petiole; subpostpetiolar process well-developed, subtriangular; profemur and protibia entirely covered with striation; striation on tergum of first gastral segment restricted to base; sternite striation of first gastral segment covering the laterobasal region.

Hylomyrma reginae is unlikely to be confused with any other congener because of its very prominent and subtriangular subpostpetiolar process.

Two specimens collected in Upper Takutu-Upper Essequibo, Guyana (USNMENT00688778, USNMENT00689009) were designated as intercaste because of the larger body measures [HL (1.16); HW (1.16–1.17); ML (0.76–0.78); SL (0.82–0.84); MOD (0.27–0.28); PNW (0.83–0.84); WL (1.64); PSL (0.34–0.35); PL (0.82–0.85); PW (0.36–0.38); PPL (0.36); PPW (0.40); GL (1.30); TL (6.04–6.09)], and for having one central and inconspicuous ocellus.


Latitudinal Distribution Pattern

Latitudinal Range: 5.266667° to -10°.

Tropical South
  • Source: Ulyssea & Brandao, 2021

Distribution based on Regional Taxon Lists

Neotropical Region: Brazil, French Guiana, Guyana (type locality), Suriname.

Distribution based on AntMaps


Distribution based on AntWeb specimens

Check data from AntWeb

Countries Occupied

Number of countries occupied by this species based on AntWiki Regional Taxon Lists. In general, fewer countries occupied indicates a narrower range, while more countries indicates a more widespread species.

Estimated Abundance

Relative abundance based on number of AntMaps records per species (this species within the purple bar). Fewer records (to the left) indicates a less abundant/encountered species while more records (to the right) indicates more abundant/encountered species.




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

  • reginae. Hylomyrma reginae Kutter, 1977a: 85, figs. 1-4 (w.) GUYANA.
    • Type-material: holotype worker, 2 paratype workers.
    • Type-locality: holotype Guyana: Morabukea, vi.1964 (R.M. Watson); paratypes with same data.
    • Type-depositories: BMNH(holotype); BMNH, NHMB (paratypes).
    • Ulysséa & Brandão, 2021: 99 (q.).
    • Status as species: Brandão, 1991: 346; Bolton, 1995b: 213; Pierce, M.P., Branstetter, et al. 2017: 137; Ulysséa & Brandão, 2021: 96 (redescription).
    • Distribution: Brazil, French Guiana, Guyana, Suriname.

Type Material

  • Holotype: GUYANA: Morabukea, vi.1964, R.M. Watson, RM1964-125, PF4,3 (1W) (CASENT0900392 BMNH(E)1013786) [BMNH] [examined by image, Ulyssea & Brandao (2021)].
  • Paratypes: same data as holotype (1W) [BMNH] [examined]; (2W) [NHMB] [examined by Ulyssea & Brandao (2021)].



References based on Global Ant Biodiversity Informatics

  • Fernández, F. and S. Sendoya. 2004. Lista de las hormigas neotropicales. Biota Colombiana Volume 5, Number 1.
  • Franco W., N. Ladino, J. H. C. Delabie, A. Dejean, J. Orivel, M. Fichaux, S. Groc, M. Leponce, and R. M. Feitosa. 2019. First checklist of the ants (Hymenoptera: Formicidae) of French Guiana. Zootaxa 4674(5): 509-543.
  • Groc S., J. H. C. Delabie, F. Fernandez, F. Petitclerc, B. Corbara, M. Leponce, R. Cereghino, and A. Dejean. 2017. Litter-dwelling ants as bioindicators to gauge the sustainability of small arboreal monocultures embedded in the Amazonian rainforest. Ecological Indicators 82: 43-49.
  • Groc S., J. H. C. Delabie, F. Fernandez, M. Leponce, J. Orivel, R. Silvestre, Heraldo L. Vasconcelos, and A. Dejean. 2013. Leaf-litter ant communities (Hymenoptera: Formicidae) in a pristine Guianese rainforest: stable functional structure versus high species turnover. Myrmecological News 19: 43-51.
  • Groc S., J. Orivel, A. Dejean, J. Martin, M. Etienne, B. Corbara, and J. H. C. Delabie. 2009. Baseline study of the leaf-litter ant fauna in a French Guianese forest. Insect Conservation and Diversity 2: 183-193.
  • Pierce M. P., M. G. Branstetter, and J. T. Longino. 2017 . Integrative taxonomy reveals multiple cryptic species within Central American Hylomyrma FOREL, 1912 (Hymenoptera: Formicidae). Myrmecological News 25: 131-143.
  • Pires de Prado L., R. M. Feitosa, S. Pinzon Triana, J. A. Munoz Gutierrez, G. X. Rousseau, R. Alves Silva, G. M. Siqueira, C. L. Caldas dos Santos, F. Veras Silva, T. Sanches Ranzani da Silva, A. Casadei-Ferreira, R. Rosa da Silva, and J. Andrade-Silva. 2019. An overview of the ant fauna (Hymenoptera: Formicidae) of the state of Maranhao, Brazil. Pap. Avulsos Zool. 59: e20195938.