Hylomyrma adelae

AntWiki: The Ants --- Online
Hylomyrma adelae
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Myrmicinae
Tribe: Pogonomyrmecini
Genus: Hylomyrma
Species: H. adelae
Binomial name
Hylomyrma adelae
Ulysséa, 2021

All specimens examined by Ulyssea & Brandao (2021) were found in leaf-litter samples of wet forests, which suggests that nests are located in fallen logs, rotten wood, between leaves, or inside natural cavities of the superficial soil layers.


Rugose and divergent striae on head dorsum; rugose striae on mesosoma; promesonotal junction and metanotal groove indistinct; dorsal margin of petiole discontinuous; subtriangular projection on mesoventral surface of petiole; irregular and transverse striae on node dorsum; ventral surface of node striate; striae on profemur posterior surface and protibia extensor surface weakly marked; long striae on tergum of first gastral segment.

Hylomyrma adelae is similar to Hylomyrma dandarae and Hylomyrma mariae. Hylomyrma adelae can be distinguished from H. dandarae (characteristics in parentheses) based on the following characters:

  • drop-shaped eye (vs. oval)
  • rugose striae on the head dorsum (vs. irregular divergent-longitudinal)
  • indistinct promesonotal junction and metanotal groove (vs. distinct)
  • tergum of the first gastral segment with long striae (vs. short striae).

Both species occur in nearby geographic areas of Bolivia (Fig. 83), H. adelae in Cochabamba and H. dandarae in La Paz.

Hylomyrma adelae differs from H. mariae in:

  • the rugose striae on the head dorsum (vs. irregular divergent-longitudinal)
  • the indistinct metanotal groove (vs. distinct)
  • the shorter propodeal spine (vs. longer)
  • the profemur posterior surface with well-marked striae (vs. weakly marked)
  • the dorsum of petiole with irregular and transverse striae (vs. rugose striae).

Also, the two species are allopatric; H. adelae in Bolivia (Fig. 83), and H. mariae in Colombia (Fig. 88).

Keys including this Species


Latitudinal Distribution Pattern

Latitudinal Range: -17° to -17°.

Tropical South
  • Source: Ulysséa & Brandao, 2021

Distribution based on Regional Taxon Lists

Neotropical Region: Bolivia (type locality).

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.




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

  • adelae. Hylomyrma adelae Ulysséa, in Ulysséa & Brandão, 2021: 19, figs. 19, 20, 80A, 81F, 83 (w.q.) BOLIVIA.
    • Type-material: holotype worker, 9 paratype workers, 2 paratype queens.
    • Type-locality: holotype Bolivia: Cochabamba, 109 km. E Cochabamba at Lagunitas, 17°06’22’’S, 65°40’57’’W, 1.ii.1999, montane evergreen forest, litter, #18644 (R. Anderson); paratypes: 4 workers with same data, 2 workers, 2 queens with same data but #18640, 1 worker with same data but #18647, 2 workers with same data but #18636.
    • Type-depositories: MCZC (holotype); CASC, IAVH, MZSP, USNM, UTEL (paratypes).
    • Distribution: Bolivia.

Type Material

  • Holotype: BOLIVIA: Cochabamba: 109k E Cochabamba at Lagunitas, 17°06′22″S, 65°40′57″W, 01.ii.99, R. Anderson [leg.], Mont. evergreen forest, litter, #18644 (1W) [MCZC].
  • Paratypes: same data as holotype (3W) [CASC, IHVL, USNM]; same data as holotype (1W) (MZSP67309) [MZSP]; same except #18640 (2W, one covered with gold) (MZSP67310, MZSP67312) [MZSP]; #18640 (2Q) (MZSP67311, MZSP67316) [MZSP]; #18647 (1W without postpetiole and gaster) [UTEP]; #18636 (1W) [UTEP]; #18636 (1W) (MZHY207) [MZSP].